/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/concurrent/pthreads/regression/pthreadExitSafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:38:55,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:38:55,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:38:55,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:38:55,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:38:55,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:38:55,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:38:55,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:38:55,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:38:55,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:38:55,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:38:55,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:38:55,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:38:55,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:38:55,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:38:55,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:38:55,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:38:55,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:38:55,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:38:55,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:38:55,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:38:55,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:38:55,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:38:55,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:38:55,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 07:38:55,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 07:38:55,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 07:38:55,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 07:38:55,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 07:38:55,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 07:38:55,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:38:55,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:38:55,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:38:55,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:38:55,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:38:55,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:38:55,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:38:55,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:38:55,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:38:55,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:38:55,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:38:55,486 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 07:38:55,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:38:55,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:38:55,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:38:55,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:38:55,524 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:38:55,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:38:55,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:38:55,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:38:55,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:38:55,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:38:55,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:38:55,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:38:55,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:38:55,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:38:55,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:38:55,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:38:55,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:38:55,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:38:55,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:38:55,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:38:55,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:38:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:38:55,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:38:55,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:38:55,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:38:55,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:38:55,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:38:55,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:38:55,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:38:55,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:38:55,856 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:38:55,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-25 07:38:55,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cdf8eb82/27e7bd51599c46b8bf934e57e69c3d32/FLAGfd121c3e7 [2021-03-25 07:38:56,347 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:38:56,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-25 07:38:56,348 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:38:56,348 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:38:56,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cdf8eb82/27e7bd51599c46b8bf934e57e69c3d32/FLAGfd121c3e7 [2021-03-25 07:38:56,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cdf8eb82/27e7bd51599c46b8bf934e57e69c3d32 [2021-03-25 07:38:56,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:38:56,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:38:56,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:38:56,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:38:56,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:38:56,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11509b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56, skipping insertion in model container [2021-03-25 07:38:56,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:38:56,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:38:56,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:38:56,590 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:38:56,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:38:56,612 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:38:56,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56 WrapperNode [2021-03-25 07:38:56,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:38:56,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:38:56,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:38:56,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:38:56,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:38:56,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:38:56,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:38:56,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:38:56,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (1/1) ... [2021-03-25 07:38:56,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:38:56,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:38:56,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:38:56,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:38:56,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (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 07:38:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-25 07:38:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:38:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-25 07:38:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-25 07:38:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:38:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 07:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 07:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-25 07:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:38:56,721 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 07:38:57,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:38:57,071 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:38:57,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:38:57 BoogieIcfgContainer [2021-03-25 07:38:57,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:38:57,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:38:57,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:38:57,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:38:57,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:38:56" (1/3) ... [2021-03-25 07:38:57,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9c682e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:38:57, skipping insertion in model container [2021-03-25 07:38:57,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:56" (2/3) ... [2021-03-25 07:38:57,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9c682e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:38:57, skipping insertion in model container [2021-03-25 07:38:57,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:38:57" (3/3) ... [2021-03-25 07:38:57,079 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitSafe.c [2021-03-25 07:38:57,084 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:38:57,088 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:38:57,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:38:57,114 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,115 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,116 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,116 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,116 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,116 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,117 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,118 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,119 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,119 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,119 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,120 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,120 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,120 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,120 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,120 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,121 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,121 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,121 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,121 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,122 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,122 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,122 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,122 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,122 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,123 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,123 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,123 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,128 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,129 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,130 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:57,143 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 07:38:57,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 07:38:57,173 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:38:57,173 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:38:57,174 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:38:57,174 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:38:57,174 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:38:57,174 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:38:57,174 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:38:57,174 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:38:57,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 94 flow [2021-03-25 07:38:57,204 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-25 07:38:57,204 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:38:57,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 42 events. 0/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:38:57,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 94 flow [2021-03-25 07:38:57,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 70 flow [2021-03-25 07:38:57,210 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:57,217 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-25 07:38:57,220 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-25 07:38:57,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 70 flow [2021-03-25 07:38:57,231 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-25 07:38:57,231 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:38:57,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 32 events. 0/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:38:57,233 INFO L142 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-25 07:38:58,176 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-25 07:38:58,177 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-25 07:38:58,178 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 969 [2021-03-25 07:38:58,185 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 07:38:58,185 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:38:58,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:58,186 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:58,186 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash -25287200, now seen corresponding path program 1 times [2021-03-25 07:38:58,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:58,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428902145] [2021-03-25 07:38:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:58,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:38:58,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 07:38:58,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:58,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:58,379 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-25 07:38:58,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 07:38:58,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:58,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:58,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:58,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 07:38:58,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:58,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:58,454 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 07:38:58,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428902145] [2021-03-25 07:38:58,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:58,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 07:38:58,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331657796] [2021-03-25 07:38:58,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 07:38:58,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:58,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 07:38:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-25 07:38:58,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-25 07:38:58,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 28 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 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 07:38:58,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:58,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-25 07:38:58,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:58,716 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-25 07:38:58,716 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:38:58,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 24. Up to 12 conditions per place. [2021-03-25 07:38:58,720 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 8 selfloop transitions, 5 changer transitions 6/19 dead transitions. [2021-03-25 07:38:58,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2021-03-25 07:38:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 07:38:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 07:38:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2021-03-25 07:38:58,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2315340909090909 [2021-03-25 07:38:58,734 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 163 transitions. [2021-03-25 07:38:58,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 163 transitions. [2021-03-25 07:38:58,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:58,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 163 transitions. [2021-03-25 07:38:58,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 07:38:58,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 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 07:38:58,751 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 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 07:38:58,752 INFO L185 Difference]: Start difference. First operand has 15 places, 11 transitions, 28 flow. Second operand 11 states and 163 transitions. [2021-03-25 07:38:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2021-03-25 07:38:58,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 07:38:58,760 INFO L241 Difference]: Finished difference. Result has 30 places, 13 transitions, 57 flow [2021-03-25 07:38:58,761 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=57, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2021-03-25 07:38:58,762 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 15 predicate places. [2021-03-25 07:38:58,762 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:58,762 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 13 transitions, 57 flow [2021-03-25 07:38:58,763 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 13 transitions, 57 flow [2021-03-25 07:38:58,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 13 transitions, 57 flow [2021-03-25 07:38:58,772 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-03-25 07:38:58,772 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:38:58,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 15 events. 1/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 32. Up to 5 conditions per place. [2021-03-25 07:38:58,773 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 07:38:59,196 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 07:38:59,196 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 07:38:59,196 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 434 [2021-03-25 07:38:59,197 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 55 flow [2021-03-25 07:38:59,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 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 07:38:59,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:59,198 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:59,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:38:59,198 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 830019454, now seen corresponding path program 2 times [2021-03-25 07:38:59,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:59,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478769333] [2021-03-25 07:38:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:59,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:38:59,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 07:38:59,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:59,256 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 07:38:59,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 07:38:59,264 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-25 07:38:59,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 07:38:59,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 07:38:59,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:59,343 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 07:38:59,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478769333] [2021-03-25 07:38:59,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:59,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 07:38:59,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725027351] [2021-03-25 07:38:59,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 07:38:59,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 07:38:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-25 07:38:59,348 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 69 [2021-03-25 07:38:59,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 55 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 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 07:38:59,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:59,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 69 [2021-03-25 07:38:59,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:59,503 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-25 07:38:59,503 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 07:38:59,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 14 events. 1/14 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 46. Up to 8 conditions per place. [2021-03-25 07:38:59,504 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 4 selfloop transitions, 3 changer transitions 5/12 dead transitions. [2021-03-25 07:38:59,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 12 transitions, 90 flow [2021-03-25 07:38:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 07:38:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 07:38:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2021-03-25 07:38:59,505 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.21195652173913043 [2021-03-25 07:38:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 117 transitions. [2021-03-25 07:38:59,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 117 transitions. [2021-03-25 07:38:59,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:59,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 117 transitions. [2021-03-25 07:38:59,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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 07:38:59,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 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 07:38:59,508 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 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 07:38:59,508 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 55 flow. Second operand 8 states and 117 transitions. [2021-03-25 07:38:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 12 transitions, 90 flow [2021-03-25 07:38:59,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 71 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-25 07:38:59,509 INFO L241 Difference]: Finished difference. Result has 23 places, 7 transitions, 34 flow [2021-03-25 07:38:59,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34, PETRI_PLACES=23, PETRI_TRANSITIONS=7} [2021-03-25 07:38:59,510 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 8 predicate places. [2021-03-25 07:38:59,510 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:59,510 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 7 transitions, 34 flow [2021-03-25 07:38:59,511 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 7 transitions, 34 flow [2021-03-25 07:38:59,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 7 transitions, 34 flow [2021-03-25 07:38:59,513 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:38:59,513 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:38:59,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:38:59,513 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 07:38:59,587 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 07:38:59,587 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 07:38:59,588 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-25 07:38:59,588 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 6 transitions, 32 flow [2021-03-25 07:38:59,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 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 07:38:59,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:59,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:59,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:38:59,589 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:59,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1211829985, now seen corresponding path program 1 times [2021-03-25 07:38:59,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:59,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078595253] [2021-03-25 07:38:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:59,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 07:38:59,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:59,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:59,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,668 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 07:38:59,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078595253] [2021-03-25 07:38:59,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:59,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:38:59,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901472655] [2021-03-25 07:38:59,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 07:38:59,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 07:38:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-25 07:38:59,670 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2021-03-25 07:38:59,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 6 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 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 07:38:59,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:59,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2021-03-25 07:38:59,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:59,718 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 07:38:59,718 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:38:59,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:38:59,718 INFO L132 encePairwiseOnDemand]: 66/70 looper letters, 2 selfloop transitions, 4 changer transitions 0/6 dead transitions. [2021-03-25 07:38:59,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 6 transitions, 44 flow [2021-03-25 07:38:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 07:38:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 07:38:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 5 states and 111 transitions. [2021-03-25 07:38:59,721 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3171428571428571 [2021-03-25 07:38:59,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2021-03-25 07:38:59,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2021-03-25 07:38:59,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:59,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2021-03-25 07:38:59,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 07:38:59,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 07:38:59,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 07:38:59,727 INFO L185 Difference]: Start difference. First operand has 16 places, 6 transitions, 32 flow. Second operand 5 states and 111 transitions. [2021-03-25 07:38:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 6 transitions, 44 flow [2021-03-25 07:38:59,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 6 transitions, 28 flow, removed 3 selfloop flow, removed 8 redundant places. [2021-03-25 07:38:59,729 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 24 flow [2021-03-25 07:38:59,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=24, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2021-03-25 07:38:59,729 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2021-03-25 07:38:59,729 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:59,729 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-25 07:38:59,730 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-25 07:38:59,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 6 transitions, 24 flow [2021-03-25 07:38:59,732 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 07:38:59,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:38:59,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:38:59,732 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:38:59,733 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:38:59,733 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:38:59,733 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 07:38:59,734 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 24 flow [2021-03-25 07:38:59,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 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 07:38:59,735 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:59,735 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:38:59,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:38:59,735 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash 177757591, now seen corresponding path program 1 times [2021-03-25 07:38:59,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:59,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397200933] [2021-03-25 07:38:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:59,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 07:38:59,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:59,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 07:38:59,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:59,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 07:38:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:38:59,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397200933] [2021-03-25 07:38:59,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:59,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 07:38:59,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141124416] [2021-03-25 07:38:59,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 07:38:59,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 07:38:59,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 07:38:59,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2021-03-25 07:38:59,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 6 transitions, 24 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 07:38:59,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:59,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2021-03-25 07:38:59,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:59,898 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 07:38:59,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:38:59,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:38:59,899 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-25 07:38:59,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 5 transitions, 32 flow [2021-03-25 07:38:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 07:38:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 07:38:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2021-03-25 07:38:59,902 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32653061224489793 [2021-03-25 07:38:59,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2021-03-25 07:38:59,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2021-03-25 07:38:59,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:59,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2021-03-25 07:38:59,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 07:38:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:59,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:59,905 INFO L185 Difference]: Start difference. First operand has 13 places, 6 transitions, 24 flow. Second operand 7 states and 160 transitions. [2021-03-25 07:38:59,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 5 transitions, 32 flow [2021-03-25 07:38:59,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 5 transitions, 21 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-25 07:38:59,906 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-03-25 07:38:59,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-03-25 07:38:59,907 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2021-03-25 07:38:59,907 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:59,907 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 07:38:59,908 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 07:38:59,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:38:59,908 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:38:59,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:38:59,908 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 07:38:59,908 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:38:59,908 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:38:59,909 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:38:59,909 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 07:38:59,914 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:38:59,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 07:38:59,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 07:38:59,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:38:59 BasicIcfg [2021-03-25 07:38:59,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:38:59,919 INFO L168 Benchmark]: Toolchain (without parser) took 3517.26 ms. Allocated memory was 255.9 MB in the beginning and 427.8 MB in the end (delta: 172.0 MB). Free memory was 235.9 MB in the beginning and 398.3 MB in the end (delta: -162.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:59,919 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:38:59,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.25 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 235.9 MB in the beginning and 339.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:59,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.81 ms. Allocated memory is still 356.5 MB. Free memory was 339.5 MB in the beginning and 338.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:38:59,921 INFO L168 Benchmark]: Boogie Preprocessor took 14.94 ms. Allocated memory is still 356.5 MB. Free memory was 338.1 MB in the beginning and 337.4 MB in the end (delta: 703.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:59,924 INFO L168 Benchmark]: RCFGBuilder took 419.40 ms. Allocated memory is still 356.5 MB. Free memory was 337.4 MB in the beginning and 321.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:59,926 INFO L168 Benchmark]: TraceAbstraction took 2843.62 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 320.6 MB in the beginning and 398.3 MB in the end (delta: -77.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:38:59,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 210.25 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 235.9 MB in the beginning and 339.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.81 ms. Allocated memory is still 356.5 MB. Free memory was 339.5 MB in the beginning and 338.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.94 ms. Allocated memory is still 356.5 MB. Free memory was 338.1 MB in the beginning and 337.4 MB in the end (delta: 703.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 419.40 ms. Allocated memory is still 356.5 MB. Free memory was 337.4 MB in the beginning and 321.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2843.62 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 320.6 MB in the beginning and 398.3 MB in the end (delta: -77.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 957.0ms, 36 PlacesBefore, 15 PlacesAfterwards, 32 TransitionsBefore, 11 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 25, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 433.3ms, 30 PlacesBefore, 21 PlacesAfterwards, 13 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 77.0ms, 23 PlacesBefore, 16 PlacesAfterwards, 7 TransitionsBefore, 6 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6ms, 13 PlacesBefore, 13 PlacesAfterwards, 6 TransitionsBefore, 6 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 13 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2744.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 586.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1007.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 21 SDslu, 44 SDs, 0 SdLazy, 248 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 161.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 470.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=1, InterpolantAutomatonStates: 31, 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: 10.8ms SsaConstructionTime, 78.6ms SatisfiabilityAnalysisTime, 432.3ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...