/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 02:38:30,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 02:38:30,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 02:38:30,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 02:38:30,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 02:38:30,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 02:38:30,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 02:38:30,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 02:38:30,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 02:38:30,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 02:38:30,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 02:38:30,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 02:38:30,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 02:38:30,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 02:38:30,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 02:38:30,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 02:38:30,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 02:38:30,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 02:38:30,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 02:38:30,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 02:38:30,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 02:38:30,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 02:38:30,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 02:38:30,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 02:38:30,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 02:38:30,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 02:38:30,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 02:38:30,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 02:38:30,999 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-SemanticLbe.epf [2020-10-16 02:38:31,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 02:38:31,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 02:38:31,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 02:38:31,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 02:38:31,050 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 02:38:31,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 02:38:31,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 02:38:31,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 02:38:31,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 02:38:31,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 02:38:31,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 02:38:31,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 02:38:31,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 02:38:31,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 02:38:31,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 02:38:31,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 02:38:31,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 02:38:31,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 02:38:31,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 02:38:31,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 02:38:31,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 02:38:31,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:38:31,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 02:38:31,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 02:38:31,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 02:38:31,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 02:38:31,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 02:38:31,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 02:38:31,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 02:38:31,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 02:38:31,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 02:38:31,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 02:38:31,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 02:38:31,354 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 02:38:31,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-16 02:38:31,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbb2055e6/25e601c137ed492eafaf02cf81bdd77d/FLAG9907ba209 [2020-10-16 02:38:31,930 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 02:38:31,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-16 02:38:31,931 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 02:38:31,931 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 02:38:31,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbb2055e6/25e601c137ed492eafaf02cf81bdd77d/FLAG9907ba209 [2020-10-16 02:38:32,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbb2055e6/25e601c137ed492eafaf02cf81bdd77d [2020-10-16 02:38:32,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 02:38:32,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 02:38:32,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 02:38:32,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 02:38:32,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 02:38:32,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2466ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32, skipping insertion in model container [2020-10-16 02:38:32,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 02:38:32,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 02:38:32,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:38:32,686 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 02:38:32,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:38:32,725 INFO L208 MainTranslator]: Completed translation [2020-10-16 02:38:32,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32 WrapperNode [2020-10-16 02:38:32,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 02:38:32,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 02:38:32,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 02:38:32,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 02:38:32,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 02:38:32,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 02:38:32,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 02:38:32,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 02:38:32,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (1/1) ... [2020-10-16 02:38:32,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 02:38:32,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 02:38:32,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 02:38:32,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 02:38:32,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (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 [2020-10-16 02:38:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 02:38:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-16 02:38:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-16 02:38:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 02:38:32,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 02:38:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 02:38:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 02:38:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 02:38:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 02:38:32,875 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 02:38:33,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 02:38:33,287 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 02:38:33,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:38:33 BoogieIcfgContainer [2020-10-16 02:38:33,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 02:38:33,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 02:38:33,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 02:38:33,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 02:38:33,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:38:32" (1/3) ... [2020-10-16 02:38:33,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdbe4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:38:33, skipping insertion in model container [2020-10-16 02:38:33,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:38:32" (2/3) ... [2020-10-16 02:38:33,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdbe4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:38:33, skipping insertion in model container [2020-10-16 02:38:33,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:38:33" (3/3) ... [2020-10-16 02:38:33,298 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-16 02:38:33,309 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 02:38:33,317 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 02:38:33,317 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 02:38:33,359 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,359 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,359 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,359 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,360 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,360 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,360 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,360 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,361 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,361 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,361 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,362 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,362 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,363 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,364 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,364 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,364 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,364 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,364 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,365 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,366 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,366 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,367 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,367 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,367 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,367 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,367 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,368 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,368 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,368 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,369 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,369 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,369 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,369 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,369 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,370 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,370 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,370 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,370 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,370 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,371 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,371 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,371 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,371 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,371 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,372 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,372 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,372 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,372 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,372 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,373 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,373 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,373 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,373 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,374 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,374 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,374 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,374 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,374 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,375 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,375 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,375 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,375 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,376 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,376 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,376 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,376 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,376 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,377 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,377 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,381 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,381 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,381 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,381 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,381 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,382 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,382 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,382 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,382 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,383 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,383 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,383 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,383 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,389 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,389 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,389 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,390 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,390 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,390 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,390 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,390 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,391 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,391 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,391 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,391 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,391 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:38:33,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 02:38:33,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:38:33,436 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:38:33,436 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:38:33,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:38:33,436 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:38:33,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:38:33,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:38:33,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:38:33,454 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-16 02:38:33,549 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-16 02:38:33,550 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 02:38:33,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-10-16 02:38:33,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 298 flow [2020-10-16 02:38:33,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 123 transitions, 264 flow [2020-10-16 02:38:33,570 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:38:33,573 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 123 transitions, 264 flow [2020-10-16 02:38:33,575 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 123 transitions, 264 flow [2020-10-16 02:38:33,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 264 flow [2020-10-16 02:38:33,610 INFO L129 PetriNetUnfolder]: 8/125 cut-off events. [2020-10-16 02:38:33,610 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 02:38:33,612 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 125 events. 8/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 62. Up to 3 conditions per place. [2020-10-16 02:38:33,615 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-16 02:38:35,894 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-16 02:38:36,009 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-16 02:38:36,217 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 02:38:36,894 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 124 [2020-10-16 02:38:37,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-16 02:38:37,189 INFO L132 LiptonReduction]: Checked pairs total: 3704 [2020-10-16 02:38:37,190 INFO L134 LiptonReduction]: Total number of compositions: 108 [2020-10-16 02:38:37,192 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3624 [2020-10-16 02:38:37,203 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2020-10-16 02:38:37,203 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 02:38:37,203 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:37,204 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:37,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash -881067035, now seen corresponding path program 1 times [2020-10-16 02:38:37,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:37,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112574010] [2020-10-16 02:38:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:37,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112574010] [2020-10-16 02:38:37,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:38:37,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:38:37,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664940515] [2020-10-16 02:38:37,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:38:37,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:37,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:38:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:38:37,496 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 246 [2020-10-16 02:38:37,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 72 flow. Second operand 3 states. [2020-10-16 02:38:37,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:37,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 246 [2020-10-16 02:38:37,501 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:37,564 INFO L129 PetriNetUnfolder]: 62/138 cut-off events. [2020-10-16 02:38:37,564 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 02:38:37,565 INFO L80 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 138 events. 62/138 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 517 event pairs, 4 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 206. Up to 60 conditions per place. [2020-10-16 02:38:37,568 INFO L132 encePairwiseOnDemand]: 242/246 looper letters, 13 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2020-10-16 02:38:37,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 118 flow [2020-10-16 02:38:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:38:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:38:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2020-10-16 02:38:37,587 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8604336043360433 [2020-10-16 02:38:37,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2020-10-16 02:38:37,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2020-10-16 02:38:37,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:37,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2020-10-16 02:38:37,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:38:37,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:38:37,607 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:38:37,610 INFO L185 Difference]: Start difference. First operand has 28 places, 27 transitions, 72 flow. Second operand 3 states and 635 transitions. [2020-10-16 02:38:37,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 118 flow [2020-10-16 02:38:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 02:38:37,616 INFO L241 Difference]: Finished difference. Result has 27 places, 29 transitions, 79 flow [2020-10-16 02:38:37,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2020-10-16 02:38:37,620 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2020-10-16 02:38:37,620 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 79 flow [2020-10-16 02:38:37,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:38:37,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:37,620 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:37,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 02:38:37,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1486486913, now seen corresponding path program 1 times [2020-10-16 02:38:37,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:37,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250824108] [2020-10-16 02:38:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:38,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250824108] [2020-10-16 02:38:38,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811385637] [2020-10-16 02:38:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:38,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 02:38:38,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:38:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:38,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:38:38,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3] total 13 [2020-10-16 02:38:38,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022872387] [2020-10-16 02:38:38,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 02:38:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 02:38:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-16 02:38:38,997 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 246 [2020-10-16 02:38:38,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 79 flow. Second operand 15 states. [2020-10-16 02:38:38,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:38,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 246 [2020-10-16 02:38:38,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:39,408 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-16 02:38:39,681 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-16 02:38:40,049 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-10-16 02:38:40,517 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2020-10-16 02:38:40,834 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-16 02:38:41,201 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-10-16 02:38:41,537 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2020-10-16 02:38:42,003 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2020-10-16 02:38:42,308 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-16 02:38:42,812 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2020-10-16 02:38:43,133 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-10-16 02:38:43,543 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2020-10-16 02:38:44,016 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2020-10-16 02:38:44,408 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-16 02:38:44,785 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 104 [2020-10-16 02:38:45,147 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-10-16 02:38:45,520 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2020-10-16 02:38:45,823 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-16 02:38:45,935 INFO L129 PetriNetUnfolder]: 623/1081 cut-off events. [2020-10-16 02:38:45,935 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2020-10-16 02:38:45,938 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1081 events. 623/1081 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5189 event pairs, 24 based on Foata normal form. 3/832 useless extension candidates. Maximal degree in co-relation 689. Up to 229 conditions per place. [2020-10-16 02:38:45,944 INFO L132 encePairwiseOnDemand]: 230/246 looper letters, 94 selfloop transitions, 27 changer transitions 38/165 dead transitions. [2020-10-16 02:38:45,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 165 transitions, 730 flow [2020-10-16 02:38:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 02:38:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-16 02:38:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1511 transitions. [2020-10-16 02:38:45,953 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.26705549664192296 [2020-10-16 02:38:45,953 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1511 transitions. [2020-10-16 02:38:45,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1511 transitions. [2020-10-16 02:38:45,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:45,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1511 transitions. [2020-10-16 02:38:45,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 24 states. [2020-10-16 02:38:45,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 24 states. [2020-10-16 02:38:45,970 INFO L81 ComplementDD]: Finished complementDD. Result 24 states. [2020-10-16 02:38:45,970 INFO L185 Difference]: Start difference. First operand has 27 places, 29 transitions, 79 flow. Second operand 23 states and 1511 transitions. [2020-10-16 02:38:45,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 165 transitions, 730 flow [2020-10-16 02:38:45,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 165 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:38:45,976 INFO L241 Difference]: Finished difference. Result has 56 places, 48 transitions, 243 flow [2020-10-16 02:38:45,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=243, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2020-10-16 02:38:45,977 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2020-10-16 02:38:45,977 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 243 flow [2020-10-16 02:38:45,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 02:38:45,978 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:45,978 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:46,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-16 02:38:46,192 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1006723981, now seen corresponding path program 1 times [2020-10-16 02:38:46,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:46,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739636112] [2020-10-16 02:38:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:38:46,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739636112] [2020-10-16 02:38:46,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:38:46,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:38:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544485427] [2020-10-16 02:38:46,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:38:46,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:46,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:38:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:38:46,256 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 246 [2020-10-16 02:38:46,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 243 flow. Second operand 5 states. [2020-10-16 02:38:46,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:46,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 246 [2020-10-16 02:38:46,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:46,437 INFO L129 PetriNetUnfolder]: 269/565 cut-off events. [2020-10-16 02:38:46,438 INFO L130 PetriNetUnfolder]: For 332/382 co-relation queries the response was YES. [2020-10-16 02:38:46,441 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 565 events. 269/565 cut-off events. For 332/382 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2998 event pairs, 56 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 1343. Up to 272 conditions per place. [2020-10-16 02:38:46,446 INFO L132 encePairwiseOnDemand]: 240/246 looper letters, 31 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2020-10-16 02:38:46,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 374 flow [2020-10-16 02:38:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 02:38:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 02:38:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2020-10-16 02:38:46,451 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2020-10-16 02:38:46,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2020-10-16 02:38:46,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2020-10-16 02:38:46,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:46,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2020-10-16 02:38:46,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 02:38:46,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 02:38:46,458 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 02:38:46,458 INFO L185 Difference]: Start difference. First operand has 56 places, 48 transitions, 243 flow. Second operand 5 states and 828 transitions. [2020-10-16 02:38:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 374 flow [2020-10-16 02:38:46,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 361 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 02:38:46,476 INFO L241 Difference]: Finished difference. Result has 47 places, 47 transitions, 241 flow [2020-10-16 02:38:46,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2020-10-16 02:38:46,477 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2020-10-16 02:38:46,477 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 241 flow [2020-10-16 02:38:46,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:38:46,477 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:46,478 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:46,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 02:38:46,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash 811152849, now seen corresponding path program 1 times [2020-10-16 02:38:46,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:46,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363647628] [2020-10-16 02:38:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:46,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363647628] [2020-10-16 02:38:46,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296620919] [2020-10-16 02:38:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:46,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 63 conjunts are in the unsatisfiable core [2020-10-16 02:38:46,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:38:47,042 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:47,043 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 168 [2020-10-16 02:38:47,047 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 4, 2, 3, 1] term [2020-10-16 02:38:47,047 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,048 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 2, 3, 1] term [2020-10-16 02:38:47,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,050 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-10-16 02:38:47,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,052 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-10-16 02:38:47,053 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,059 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,074 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:47,081 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:47,201 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-16 02:38:47,202 INFO L625 ElimStorePlain]: treesize reduction 286, result has 15.9 percent of original size [2020-10-16 02:38:47,215 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-16 02:38:47,216 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:47,249 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:47,257 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 02:38:47,257 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:65, output treesize:50 [2020-10-16 02:38:47,641 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:47,642 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 61 [2020-10-16 02:38:47,643 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:47,688 INFO L625 ElimStorePlain]: treesize reduction 20, result has 75.9 percent of original size [2020-10-16 02:38:47,698 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-10-16 02:38:47,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:67, output treesize:63 [2020-10-16 02:38:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:48,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:38:48,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 02:38:48,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957039286] [2020-10-16 02:38:48,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 02:38:48,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:48,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 02:38:48,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-16 02:38:48,090 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 246 [2020-10-16 02:38:48,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 241 flow. Second operand 16 states. [2020-10-16 02:38:48,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:48,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 246 [2020-10-16 02:38:48,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:48,811 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 02:38:49,037 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-16 02:38:49,424 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-16 02:38:50,234 INFO L129 PetriNetUnfolder]: 871/1591 cut-off events. [2020-10-16 02:38:50,235 INFO L130 PetriNetUnfolder]: For 1574/1626 co-relation queries the response was YES. [2020-10-16 02:38:50,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 1591 events. 871/1591 cut-off events. For 1574/1626 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9451 event pairs, 45 based on Foata normal form. 4/1575 useless extension candidates. Maximal degree in co-relation 2773. Up to 583 conditions per place. [2020-10-16 02:38:50,248 INFO L132 encePairwiseOnDemand]: 236/246 looper letters, 86 selfloop transitions, 25 changer transitions 3/133 dead transitions. [2020-10-16 02:38:50,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 133 transitions, 853 flow [2020-10-16 02:38:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 02:38:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-16 02:38:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1075 transitions. [2020-10-16 02:38:50,258 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4369918699186992 [2020-10-16 02:38:50,258 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1075 transitions. [2020-10-16 02:38:50,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1075 transitions. [2020-10-16 02:38:50,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:50,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1075 transitions. [2020-10-16 02:38:50,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-16 02:38:50,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-16 02:38:50,267 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-16 02:38:50,267 INFO L185 Difference]: Start difference. First operand has 47 places, 47 transitions, 241 flow. Second operand 10 states and 1075 transitions. [2020-10-16 02:38:50,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 133 transitions, 853 flow [2020-10-16 02:38:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 133 transitions, 821 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 02:38:50,285 INFO L241 Difference]: Finished difference. Result has 56 places, 63 transitions, 399 flow [2020-10-16 02:38:50,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=399, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2020-10-16 02:38:50,286 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2020-10-16 02:38:50,286 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 399 flow [2020-10-16 02:38:50,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 02:38:50,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:50,286 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:50,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:50,502 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -289117195, now seen corresponding path program 1 times [2020-10-16 02:38:50,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:50,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350964912] [2020-10-16 02:38:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:50,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350964912] [2020-10-16 02:38:50,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772114473] [2020-10-16 02:38:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:51,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 66 conjunts are in the unsatisfiable core [2020-10-16 02:38:51,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:38:51,073 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:51,074 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 206 [2020-10-16 02:38:51,077 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 5, 2, 2, 2, 2, 2, 2, 1] term [2020-10-16 02:38:51,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,079 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-16 02:38:51,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,084 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,091 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 2, 2, 2, 2, 1] term [2020-10-16 02:38:51,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 02:38:51,094 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:51,254 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2020-10-16 02:38:51,255 INFO L625 ElimStorePlain]: treesize reduction 540, result has 9.1 percent of original size [2020-10-16 02:38:51,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-16 02:38:51,263 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:51,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:51,302 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-16 02:38:51,303 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:65, output treesize:50 [2020-10-16 02:38:51,425 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-16 02:38:51,426 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:51,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:51,456 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 02:38:51,457 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:57 [2020-10-16 02:38:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:51,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:38:51,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 02:38:51,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131981381] [2020-10-16 02:38:51,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 02:38:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:51,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 02:38:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-16 02:38:51,931 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 246 [2020-10-16 02:38:51,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 399 flow. Second operand 18 states. [2020-10-16 02:38:51,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:51,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 246 [2020-10-16 02:38:51,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:52,576 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 02:38:52,794 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-16 02:38:53,273 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-16 02:38:53,656 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-16 02:38:54,005 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-16 02:38:54,491 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-16 02:38:55,171 INFO L129 PetriNetUnfolder]: 1407/2709 cut-off events. [2020-10-16 02:38:55,172 INFO L130 PetriNetUnfolder]: For 4106/4207 co-relation queries the response was YES. [2020-10-16 02:38:55,185 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 2709 events. 1407/2709 cut-off events. For 4106/4207 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18507 event pairs, 255 based on Foata normal form. 26/2671 useless extension candidates. Maximal degree in co-relation 5114. Up to 905 conditions per place. [2020-10-16 02:38:55,204 INFO L132 encePairwiseOnDemand]: 236/246 looper letters, 103 selfloop transitions, 45 changer transitions 4/171 dead transitions. [2020-10-16 02:38:55,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 171 transitions, 1305 flow [2020-10-16 02:38:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 02:38:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-16 02:38:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1690 transitions. [2020-10-16 02:38:55,214 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.429369918699187 [2020-10-16 02:38:55,214 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1690 transitions. [2020-10-16 02:38:55,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1690 transitions. [2020-10-16 02:38:55,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:55,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1690 transitions. [2020-10-16 02:38:55,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-10-16 02:38:55,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 17 states. [2020-10-16 02:38:55,232 INFO L81 ComplementDD]: Finished complementDD. Result 17 states. [2020-10-16 02:38:55,232 INFO L185 Difference]: Start difference. First operand has 56 places, 63 transitions, 399 flow. Second operand 16 states and 1690 transitions. [2020-10-16 02:38:55,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 171 transitions, 1305 flow [2020-10-16 02:38:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 171 transitions, 1272 flow, removed 12 selfloop flow, removed 3 redundant places. [2020-10-16 02:38:55,263 INFO L241 Difference]: Finished difference. Result has 73 places, 90 transitions, 717 flow [2020-10-16 02:38:55,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=717, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2020-10-16 02:38:55,264 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, 45 predicate places. [2020-10-16 02:38:55,264 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 717 flow [2020-10-16 02:38:55,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 02:38:55,264 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:55,265 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:55,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:55,478 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 02:38:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1077816625, now seen corresponding path program 2 times [2020-10-16 02:38:55,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:55,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151232707] [2020-10-16 02:38:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:38:55,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151232707] [2020-10-16 02:38:55,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292806441] [2020-10-16 02:38:55,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:38:55,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 02:38:55,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 02:38:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-16 02:38:55,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:38:55,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2020-10-16 02:38:56,000 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-16 02:38:56,023 INFO L625 ElimStorePlain]: treesize reduction 18, result has 50.0 percent of original size [2020-10-16 02:38:56,024 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-16 02:38:56,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-16 02:38:56,113 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-16 02:38:56,113 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 02:38:56,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 02:38:56,120 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 02:38:56,121 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-16 02:38:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:38:56,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:38:56,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-16 02:38:56,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67432406] [2020-10-16 02:38:56,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 02:38:56,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:56,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 02:38:56,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-16 02:38:56,175 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 246 [2020-10-16 02:38:56,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 717 flow. Second operand 15 states. [2020-10-16 02:38:56,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:56,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 246 [2020-10-16 02:38:56,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:39:00,690 INFO L129 PetriNetUnfolder]: 4025/7456 cut-off events. [2020-10-16 02:39:00,690 INFO L130 PetriNetUnfolder]: For 20436/20723 co-relation queries the response was YES. [2020-10-16 02:39:00,729 INFO L80 FinitePrefix]: Finished finitePrefix Result has 26204 conditions, 7456 events. 4025/7456 cut-off events. For 20436/20723 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 58565 event pairs, 430 based on Foata normal form. 62/7405 useless extension candidates. Maximal degree in co-relation 24186. Up to 1624 conditions per place. [2020-10-16 02:39:00,740 INFO L132 encePairwiseOnDemand]: 236/246 looper letters, 0 selfloop transitions, 0 changer transitions 518/518 dead transitions. [2020-10-16 02:39:00,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 518 transitions, 4419 flow [2020-10-16 02:39:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-16 02:39:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 02:39:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5107 transitions. [2020-10-16 02:39:00,757 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.43250338753387535 [2020-10-16 02:39:00,758 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5107 transitions. [2020-10-16 02:39:00,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5107 transitions. [2020-10-16 02:39:00,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:39:00,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5107 transitions. [2020-10-16 02:39:00,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 49 states. [2020-10-16 02:39:00,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 49 states. [2020-10-16 02:39:00,788 INFO L81 ComplementDD]: Finished complementDD. Result 49 states. [2020-10-16 02:39:00,788 INFO L185 Difference]: Start difference. First operand has 73 places, 90 transitions, 717 flow. Second operand 48 states and 5107 transitions. [2020-10-16 02:39:00,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 518 transitions, 4419 flow [2020-10-16 02:39:00,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 518 transitions, 4170 flow, removed 109 selfloop flow, removed 4 redundant places. [2020-10-16 02:39:00,853 INFO L241 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2020-10-16 02:39:00,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2020-10-16 02:39:00,853 INFO L342 CegarLoopForPetriNet]: 28 programPoint places, 84 predicate places. [2020-10-16 02:39:00,853 INFO L481 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2020-10-16 02:39:00,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 02:39:01,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:39:01,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:39:01 BasicIcfg [2020-10-16 02:39:01,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:39:01,075 INFO L168 Benchmark]: Toolchain (without parser) took 28726.18 ms. Allocated memory was 252.7 MB in the beginning and 625.5 MB in the end (delta: 372.8 MB). Free memory was 208.6 MB in the beginning and 191.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 390.4 MB. Max. memory is 14.2 GB. [2020-10-16 02:39:01,075 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:39:01,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.79 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.6 MB in the beginning and 289.8 MB in the end (delta: -81.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. [2020-10-16 02:39:01,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 318.2 MB. Free memory is still 289.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:39:01,077 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 318.2 MB. Free memory was 289.8 MB in the beginning and 287.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:39:01,078 INFO L168 Benchmark]: RCFGBuilder took 494.19 ms. Allocated memory is still 318.2 MB. Free memory was 287.2 MB in the beginning and 259.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-16 02:39:01,079 INFO L168 Benchmark]: TraceAbstraction took 27782.44 ms. Allocated memory was 318.2 MB in the beginning and 625.5 MB in the end (delta: 307.2 MB). Free memory was 259.9 MB in the beginning and 191.0 MB in the end (delta: 68.9 MB). Peak memory consumption was 376.1 MB. Max. memory is 14.2 GB. [2020-10-16 02:39:01,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 375.79 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.6 MB in the beginning and 289.8 MB in the end (delta: -81.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 318.2 MB. Free memory is still 289.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 318.2 MB. Free memory was 289.8 MB in the beginning and 287.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 494.19 ms. Allocated memory is still 318.2 MB. Free memory was 287.2 MB in the beginning and 259.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 27782.44 ms. Allocated memory was 318.2 MB in the beginning and 625.5 MB in the end (delta: 307.2 MB). Free memory was 259.9 MB in the beginning and 191.0 MB in the end (delta: 68.9 MB). Peak memory consumption was 376.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1350 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 129 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 121 PlacesBefore, 28 PlacesAfterwards, 123 TransitionsBefore, 27 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 3704 MoverChecksTotal - PositiveResult [Line: 67]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 27.6s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 109 SDtfs, 640 SDslu, 358 SDs, 0 SdLazy, 3280 SolverSat, 140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=717occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 196 ConstructedInterpolants, 50 QuantifiedInterpolants, 103885 SizeOfPredicates, 76 NumberOfNonLiveVariables, 664 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 7/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...