/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:01:47,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:01:47,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:01:47,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:01:47,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:01:47,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:01:47,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:01:47,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:01:47,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:01:47,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:01:47,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:01:47,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:01:47,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:01:47,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:01:47,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:01:47,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:01:47,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:01:47,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:01:47,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:01:47,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:01:47,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:01:47,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:01:47,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:01:47,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:01:47,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:01:47,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:01:47,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:01:47,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:01:47,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:01:47,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:01:47,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:01:47,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:01:47,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:01:47,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:01:47,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:01:47,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:01:47,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:01:47,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:01:47,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:01:47,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:01:47,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:01:47,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:01:47,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:01:47,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:01:47,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:01:47,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:01:47,435 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:01:47,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:01:47,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:01:47,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:01:47,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:01:47,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:01:47,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:01:47,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:01:47,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:01:47,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:01:47,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:01:47,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:01:47,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:01:47,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:01:47,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:01:47,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:01:47,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:01:47,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:01:47,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:01:47,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:01:47,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:01:47,440 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:01:47,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:01:47,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:01:47,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:01:47,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:01:47,812 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:01:47,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2021-03-25 05:01:47,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db653f69b/7d1aa80a6ae84d879314bffe2a015865/FLAG8dfded502 [2021-03-25 05:01:48,668 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:01:48,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2021-03-25 05:01:48,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db653f69b/7d1aa80a6ae84d879314bffe2a015865/FLAG8dfded502 [2021-03-25 05:01:48,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db653f69b/7d1aa80a6ae84d879314bffe2a015865 [2021-03-25 05:01:48,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:01:48,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:01:48,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:01:48,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:01:48,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:01:48,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:01:48" (1/1) ... [2021-03-25 05:01:48,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1908953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:48, skipping insertion in model container [2021-03-25 05:01:48,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:01:48" (1/1) ... [2021-03-25 05:01:48,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:01:48,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:01:49,042 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/safe011_tso.oepc.i[950,963] [2021-03-25 05:01:49,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:01:49,207 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:01:49,217 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/safe011_tso.oepc.i[950,963] [2021-03-25 05:01:49,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:01:49,314 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:01:49,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49 WrapperNode [2021-03-25 05:01:49,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:01:49,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:01:49,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:01:49,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:01:49,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:01:49,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:01:49,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:01:49,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:01:49,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... [2021-03-25 05:01:49,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:01:49,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:01:49,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:01:49,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:01:49,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:01:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:01:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:01:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:01:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:01:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:01:49,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:01:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:01:49,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:01:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:01:49,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:01:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:01:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:01:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:01:49,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:01:49,452 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:01:49,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:01:49,687 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:01:49,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:01:49 BoogieIcfgContainer [2021-03-25 05:01:49,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:01:49,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:01:49,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:01:49,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:01:49,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:01:48" (1/3) ... [2021-03-25 05:01:49,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a418ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:01:49, skipping insertion in model container [2021-03-25 05:01:49,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:01:49" (2/3) ... [2021-03-25 05:01:49,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a418ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:01:49, skipping insertion in model container [2021-03-25 05:01:49,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:01:49" (3/3) ... [2021-03-25 05:01:49,694 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2021-03-25 05:01:49,699 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:01:49,702 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:01:49,702 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:01:49,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,739 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,739 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:01:49,751 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:01:49,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:01:49,785 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:01:49,785 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:01:49,785 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:01:49,785 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:01:49,785 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:01:49,785 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:01:49,785 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:01:49,786 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:01:49,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:01:49,832 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 05:01:49,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:49,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:01:49,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:01:49,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 05:01:49,847 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:49,855 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:01:49,858 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:01:49,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 05:01:49,886 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 05:01:49,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:49,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:01:49,889 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:01:50,852 INFO L154 LiptonReduction]: Checked pairs total: 996 [2021-03-25 05:01:50,853 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 05:01:50,854 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1008 [2021-03-25 05:01:50,863 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 05:01:50,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:50,863 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:50,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:50,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:50,868 INFO L82 PathProgramCache]: Analyzing trace with hash -397059577, now seen corresponding path program 1 times [2021-03-25 05:01:50,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:50,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038169448] [2021-03-25 05:01:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:51,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:51,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:51,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:51,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:51,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038169448] [2021-03-25 05:01:51,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:51,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:51,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880956972] [2021-03-25 05:01:51,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:51,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:51,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:51,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 111 [2021-03-25 05:01:51,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:51,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 111 [2021-03-25 05:01:51,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:51,089 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 05:01:51,089 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:51,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 32 events. 3/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-25 05:01:51,090 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 05:01:51,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 69 flow [2021-03-25 05:01:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-25 05:01:51,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8948948948948949 [2021-03-25 05:01:51,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-25 05:01:51,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-25 05:01:51,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:51,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-25 05:01:51,107 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) [2021-03-25 05:01:51,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,113 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 298 transitions. [2021-03-25 05:01:51,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 69 flow [2021-03-25 05:01:51,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:01:51,116 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 69 flow [2021-03-25 05:01:51,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-25 05:01:51,119 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-25 05:01:51,119 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:51,119 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 24 transitions, 69 flow [2021-03-25 05:01:51,120 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 24 transitions, 69 flow [2021-03-25 05:01:51,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 24 transitions, 69 flow [2021-03-25 05:01:51,125 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 05:01:51,125 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:01:51,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 32 events. 3/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 1 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2021-03-25 05:01:51,126 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-25 05:01:51,396 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-03-25 05:01:51,581 INFO L154 LiptonReduction]: Checked pairs total: 387 [2021-03-25 05:01:51,581 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:01:51,581 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 462 [2021-03-25 05:01:51,582 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 61 flow [2021-03-25 05:01:51,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:51,582 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:51,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:01:51,583 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash 576054563, now seen corresponding path program 1 times [2021-03-25 05:01:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:51,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462152225] [2021-03-25 05:01:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:51,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:51,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:51,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:51,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:51,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462152225] [2021-03-25 05:01:51,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:51,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:51,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663594324] [2021-03-25 05:01:51,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:51,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:51,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 115 [2021-03-25 05:01:51,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:51,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 115 [2021-03-25 05:01:51,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:51,718 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-25 05:01:51,718 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 05:01:51,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 28 events. 3/28 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2021-03-25 05:01:51,719 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2021-03-25 05:01:51,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 67 flow [2021-03-25 05:01:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-25 05:01:51,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.881159420289855 [2021-03-25 05:01:51,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-25 05:01:51,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-25 05:01:51,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:51,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-25 05:01:51,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:51,731 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 61 flow. Second operand 3 states and 304 transitions. [2021-03-25 05:01:51,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 67 flow [2021-03-25 05:01:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:01:51,732 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 66 flow [2021-03-25 05:01:51,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-25 05:01:51,733 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2021-03-25 05:01:51,733 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:51,733 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 20 transitions, 66 flow [2021-03-25 05:01:51,733 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 20 transitions, 66 flow [2021-03-25 05:01:51,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 20 transitions, 66 flow [2021-03-25 05:01:51,737 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-25 05:01:51,737 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 05:01:51,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 28 events. 3/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2021-03-25 05:01:51,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 142 [2021-03-25 05:01:51,879 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:01:52,110 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:01:52,178 INFO L154 LiptonReduction]: Checked pairs total: 196 [2021-03-25 05:01:52,179 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:01:52,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 446 [2021-03-25 05:01:52,180 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2021-03-25 05:01:52,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:52,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:52,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:01:52,181 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:52,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1275168165, now seen corresponding path program 1 times [2021-03-25 05:01:52,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:52,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379172742] [2021-03-25 05:01:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:52,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:52,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379172742] [2021-03-25 05:01:52,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:52,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:52,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477715983] [2021-03-25 05:01:52,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:52,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:52,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 116 [2021-03-25 05:01:52,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:52,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 116 [2021-03-25 05:01:52,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:52,297 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 05:01:52,298 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-25 05:01:52,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 33 events. 2/33 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 3/35 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-25 05:01:52,298 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 2 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-25 05:01:52,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 05:01:52,300 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8426724137931034 [2021-03-25 05:01:52,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 05:01:52,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 05:01:52,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:52,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 05:01:52,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2021-03-25 05:01:52,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,303 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 4 states and 391 transitions. [2021-03-25 05:01:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:01:52,304 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,305 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2021-03-25 05:01:52,305 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-25 05:01:52,305 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:52,305 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,305 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,310 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 05:01:52,310 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 05:01:52,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 33 events. 2/33 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2021-03-25 05:01:52,311 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-25 05:01:52,312 INFO L154 LiptonReduction]: Checked pairs total: 102 [2021-03-25 05:01:52,312 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:52,313 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:01:52,313 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 79 flow [2021-03-25 05:01:52,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,314 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:52,314 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:52,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:01:52,314 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:52,315 INFO L82 PathProgramCache]: Analyzing trace with hash 83683807, now seen corresponding path program 1 times [2021-03-25 05:01:52,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:52,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085257077] [2021-03-25 05:01:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:52,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,362 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:01:52,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:01:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:52,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085257077] [2021-03-25 05:01:52,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:52,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:52,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655094228] [2021-03-25 05:01:52,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:52,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:52,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:52,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 116 [2021-03-25 05:01:52,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:52,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 116 [2021-03-25 05:01:52,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:52,415 INFO L129 PetriNetUnfolder]: 25/105 cut-off events. [2021-03-25 05:01:52,415 INFO L130 PetriNetUnfolder]: For 109/128 co-relation queries the response was YES. [2021-03-25 05:01:52,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 105 events. 25/105 cut-off events. For 109/128 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 3 based on Foata normal form. 15/118 useless extension candidates. Maximal degree in co-relation 251. Up to 30 conditions per place. [2021-03-25 05:01:52,418 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 7 selfloop transitions, 9 changer transitions 7/33 dead transitions. [2021-03-25 05:01:52,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 175 flow [2021-03-25 05:01:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2021-03-25 05:01:52,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8060344827586207 [2021-03-25 05:01:52,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2021-03-25 05:01:52,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2021-03-25 05:01:52,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:52,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2021-03-25 05:01:52,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,423 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 79 flow. Second operand 4 states and 374 transitions. [2021-03-25 05:01:52,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 175 flow [2021-03-25 05:01:52,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:01:52,426 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 133 flow [2021-03-25 05:01:52,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-25 05:01:52,427 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-25 05:01:52,427 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:52,427 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 24 transitions, 133 flow [2021-03-25 05:01:52,428 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 24 transitions, 133 flow [2021-03-25 05:01:52,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 24 transitions, 133 flow [2021-03-25 05:01:52,435 INFO L129 PetriNetUnfolder]: 7/45 cut-off events. [2021-03-25 05:01:52,435 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2021-03-25 05:01:52,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 45 events. 7/45 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 132 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 122. Up to 14 conditions per place. [2021-03-25 05:01:52,437 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 05:01:52,480 INFO L154 LiptonReduction]: Checked pairs total: 182 [2021-03-25 05:01:52,481 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:01:52,481 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-25 05:01:52,481 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 134 flow [2021-03-25 05:01:52,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:52,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:52,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:01:52,482 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:52,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:52,483 INFO L82 PathProgramCache]: Analyzing trace with hash -188603145, now seen corresponding path program 1 times [2021-03-25 05:01:52,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:52,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069389238] [2021-03-25 05:01:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:52,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:52,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069389238] [2021-03-25 05:01:52,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:52,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:52,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038102238] [2021-03-25 05:01:52,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:52,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:52,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:52,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:52,545 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-03-25 05:01:52,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 134 flow. Second operand has 3 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) [2021-03-25 05:01:52,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:52,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-03-25 05:01:52,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:52,568 INFO L129 PetriNetUnfolder]: 37/103 cut-off events. [2021-03-25 05:01:52,568 INFO L130 PetriNetUnfolder]: For 112/120 co-relation queries the response was YES. [2021-03-25 05:01:52,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 103 events. 37/103 cut-off events. For 112/120 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 427 event pairs, 11 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 272. Up to 67 conditions per place. [2021-03-25 05:01:52,569 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-25 05:01:52,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 156 flow [2021-03-25 05:01:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-25 05:01:52,571 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8559322033898306 [2021-03-25 05:01:52,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-25 05:01:52,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-25 05:01:52,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:52,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-25 05:01:52,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,574 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 134 flow. Second operand 3 states and 303 transitions. [2021-03-25 05:01:52,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 156 flow [2021-03-25 05:01:52,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 143 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 05:01:52,576 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 147 flow [2021-03-25 05:01:52,576 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:01:52,576 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-25 05:01:52,576 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:52,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 147 flow [2021-03-25 05:01:52,576 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 147 flow [2021-03-25 05:01:52,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 147 flow [2021-03-25 05:01:52,586 INFO L129 PetriNetUnfolder]: 37/105 cut-off events. [2021-03-25 05:01:52,586 INFO L130 PetriNetUnfolder]: For 66/74 co-relation queries the response was YES. [2021-03-25 05:01:52,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 105 events. 37/105 cut-off events. For 66/74 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 477 event pairs, 11 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 270. Up to 67 conditions per place. [2021-03-25 05:01:52,587 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 05:01:52,589 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:01:52,589 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:52,589 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 05:01:52,590 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 147 flow [2021-03-25 05:01:52,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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) [2021-03-25 05:01:52,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:52,591 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:52,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:01:52,591 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1989234240, now seen corresponding path program 1 times [2021-03-25 05:01:52,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:52,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560577927] [2021-03-25 05:01:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:52,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:52,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560577927] [2021-03-25 05:01:52,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:52,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:01:52,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63358703] [2021-03-25 05:01:52,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:52,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:52,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:52,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-03-25 05:01:52,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:52,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-03-25 05:01:52,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:52,672 INFO L129 PetriNetUnfolder]: 17/64 cut-off events. [2021-03-25 05:01:52,673 INFO L130 PetriNetUnfolder]: For 50/78 co-relation queries the response was YES. [2021-03-25 05:01:52,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 64 events. 17/64 cut-off events. For 50/78 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 1 based on Foata normal form. 24/87 useless extension candidates. Maximal degree in co-relation 201. Up to 39 conditions per place. [2021-03-25 05:01:52,673 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 3 selfloop transitions, 7 changer transitions 1/29 dead transitions. [2021-03-25 05:01:52,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 181 flow [2021-03-25 05:01:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2021-03-25 05:01:52,676 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8559322033898306 [2021-03-25 05:01:52,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2021-03-25 05:01:52,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2021-03-25 05:01:52,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:52,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2021-03-25 05:01:52,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2021-03-25 05:01:52,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,679 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 147 flow. Second operand 4 states and 404 transitions. [2021-03-25 05:01:52,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 181 flow [2021-03-25 05:01:52,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:01:52,684 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 172 flow [2021-03-25 05:01:52,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2021-03-25 05:01:52,685 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2021-03-25 05:01:52,685 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:52,685 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 28 transitions, 172 flow [2021-03-25 05:01:52,685 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 28 transitions, 172 flow [2021-03-25 05:01:52,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 28 transitions, 172 flow [2021-03-25 05:01:52,691 INFO L129 PetriNetUnfolder]: 15/62 cut-off events. [2021-03-25 05:01:52,691 INFO L130 PetriNetUnfolder]: For 55/73 co-relation queries the response was YES. [2021-03-25 05:01:52,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 62 events. 15/62 cut-off events. For 55/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs, 1 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 197. Up to 37 conditions per place. [2021-03-25 05:01:52,693 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 05:01:52,762 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 05:01:52,762 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:01:52,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-25 05:01:52,764 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 170 flow [2021-03-25 05:01:52,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:52,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:52,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:01:52,765 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash -363006437, now seen corresponding path program 1 times [2021-03-25 05:01:52,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:52,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139153189] [2021-03-25 05:01:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:52,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:52,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:52,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139153189] [2021-03-25 05:01:52,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:52,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:01:52,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988803610] [2021-03-25 05:01:52,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:01:52,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:52,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:01:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:01:52,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 119 [2021-03-25 05:01:52,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:52,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 119 [2021-03-25 05:01:52,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:52,858 INFO L129 PetriNetUnfolder]: 12/46 cut-off events. [2021-03-25 05:01:52,858 INFO L130 PetriNetUnfolder]: For 133/198 co-relation queries the response was YES. [2021-03-25 05:01:52,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 46 events. 12/46 cut-off events. For 133/198 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 34/79 useless extension candidates. Maximal degree in co-relation 170. Up to 25 conditions per place. [2021-03-25 05:01:52,859 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-25 05:01:52,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 176 flow [2021-03-25 05:01:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:01:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:01:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2021-03-25 05:01:52,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2021-03-25 05:01:52,861 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2021-03-25 05:01:52,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2021-03-25 05:01:52,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:52,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2021-03-25 05:01:52,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,863 INFO L185 Difference]: Start difference. First operand has 37 places, 27 transitions, 170 flow. Second operand 5 states and 500 transitions. [2021-03-25 05:01:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 176 flow [2021-03-25 05:01:52,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 159 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 05:01:52,865 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-25 05:01:52,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-25 05:01:52,865 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 05:01:52,865 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:52,865 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:01:52,866 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:01:52,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:01:52,866 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:01:52,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:52,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:01:52,866 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:01:52,866 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:01:52,866 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:52,866 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:01:52,867 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:01:52,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:52,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:01:52,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:01:52 BasicIcfg [2021-03-25 05:01:52,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:01:52,872 INFO L168 Benchmark]: Toolchain (without parser) took 4002.22 ms. Allocated memory was 255.9 MB in the beginning and 415.2 MB in the end (delta: 159.4 MB). Free memory was 234.4 MB in the beginning and 268.9 MB in the end (delta: -34.5 MB). Peak memory consumption was 124.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,872 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:01:52,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.94 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 234.4 MB in the beginning and 309.2 MB in the end (delta: -74.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 346.0 MB. Free memory was 309.2 MB in the beginning and 307.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,873 INFO L168 Benchmark]: Boogie Preprocessor took 18.45 ms. Allocated memory is still 346.0 MB. Free memory was 307.0 MB in the beginning and 305.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,874 INFO L168 Benchmark]: RCFGBuilder took 311.35 ms. Allocated memory is still 346.0 MB. Free memory was 305.6 MB in the beginning and 283.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,874 INFO L168 Benchmark]: TraceAbstraction took 3181.57 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 283.3 MB in the beginning and 268.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:52,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 443.94 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 234.4 MB in the beginning and 309.2 MB in the end (delta: -74.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.62 ms. Allocated memory is still 346.0 MB. Free memory was 309.2 MB in the beginning and 307.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.45 ms. Allocated memory is still 346.0 MB. Free memory was 307.0 MB in the beginning and 305.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 311.35 ms. Allocated memory is still 346.0 MB. Free memory was 305.6 MB in the beginning and 283.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3181.57 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 283.3 MB in the beginning and 268.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 994.8ms, 68 PlacesBefore, 32 PlacesAfterwards, 59 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 529, positive: 496, positive conditional: 0, positive unconditional: 496, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 394, positive: 378, positive conditional: 0, positive unconditional: 378, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 394, positive: 378, positive conditional: 0, positive unconditional: 378, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 529, positive: 118, positive conditional: 0, positive unconditional: 118, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 394, unknown conditional: 0, unknown unconditional: 394] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 461.4ms, 32 PlacesBefore, 28 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 167, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 40, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 40, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 167, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 40, unknown conditional: 0, unknown unconditional: 40] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 445.6ms, 30 PlacesBefore, 29 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 142 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 196 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1ms, 32 PlacesBefore, 32 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 102 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.3ms, 36 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 23 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 182 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 101, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 101, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 36 PlacesBefore, 36 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 77.0ms, 38 PlacesBefore, 37 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 37 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3086.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 272.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1072.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 3 SDslu, 7 SDs, 0 SdLazy, 50 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=6, InterpolantAutomatonStates: 26, 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: 21.6ms SsaConstructionTime, 171.5ms SatisfiabilityAnalysisTime, 315.7ms InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...