/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/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 23:59:08,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 23:59:08,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 23:59:08,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 23:59:08,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 23:59:08,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 23:59:08,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 23:59:08,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 23:59:08,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 23:59:08,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 23:59:08,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 23:59:08,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 23:59:08,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 23:59:08,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 23:59:08,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 23:59:08,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 23:59:08,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 23:59:08,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 23:59:08,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 23:59:08,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 23:59:08,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 23:59:08,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 23:59:08,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 23:59:08,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 23:59:08,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 23:59:08,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 23:59:08,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 23:59:08,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 23:59:08,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 23:59:08,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 23:59:08,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 23:59:08,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 23:59:08,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 23:59:08,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 23:59:08,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 23:59:08,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 23:59:08,314 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 [2020-10-15 23:59:08,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 23:59:08,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 23:59:08,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 23:59:08,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 23:59:08,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 23:59:08,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 23:59:08,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 23:59:08,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 23:59:08,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 23:59:08,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 23:59:08,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 23:59:08,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 23:59:08,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 23:59:08,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 23:59:08,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 23:59:08,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 23:59:08,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:59:08,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 23:59:08,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 23:59:08,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 23:59:08,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 23:59:08,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 23:59:08,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-15 23:59:08,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 23:59:08,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 23:59:08,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 23:59:08,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 23:59:08,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 23:59:08,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 23:59:08,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-15 23:59:08,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2251498f/e19a4cfef47443868bd8d09520a7521b/FLAGa0d5f27c1 [2020-10-15 23:59:09,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 23:59:09,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2020-10-15 23:59:09,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2251498f/e19a4cfef47443868bd8d09520a7521b/FLAGa0d5f27c1 [2020-10-15 23:59:09,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2251498f/e19a4cfef47443868bd8d09520a7521b [2020-10-15 23:59:09,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 23:59:09,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 23:59:09,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 23:59:09,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 23:59:09,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 23:59:09,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:59:09" (1/1) ... [2020-10-15 23:59:09,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebf64a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:09, skipping insertion in model container [2020-10-15 23:59:09,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:59:09" (1/1) ... [2020-10-15 23:59:09,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 23:59:09,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 23:59:10,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:59:10,201 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 23:59:10,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:59:10,414 INFO L208 MainTranslator]: Completed translation [2020-10-15 23:59:10,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10 WrapperNode [2020-10-15 23:59:10,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 23:59:10,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 23:59:10,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 23:59:10,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 23:59:10,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 23:59:10,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 23:59:10,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 23:59:10,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 23:59:10,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (1/1) ... [2020-10-15 23:59:10,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 23:59:10,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 23:59:10,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 23:59:10,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 23:59:10,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (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 [2020-10-15 23:59:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-15 23:59:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-15 23:59:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-15 23:59:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-15 23:59:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 23:59:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 23:59:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 23:59:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 23:59:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-15 23:59:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 23:59:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 23:59:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 23:59:10,587 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 23:59:11,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 23:59:11,083 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-15 23:59:11,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:59:11 BoogieIcfgContainer [2020-10-15 23:59:11,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 23:59:11,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 23:59:11,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 23:59:11,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 23:59:11,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 11:59:09" (1/3) ... [2020-10-15 23:59:11,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:59:11, skipping insertion in model container [2020-10-15 23:59:11,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:59:10" (2/3) ... [2020-10-15 23:59:11,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:59:11, skipping insertion in model container [2020-10-15 23:59:11,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:59:11" (3/3) ... [2020-10-15 23:59:11,094 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-15 23:59:11,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 23:59:11,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 23:59:11,112 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 23:59:11,147 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,147 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,148 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,148 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,152 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,152 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,152 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,152 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,153 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,153 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,153 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,154 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,154 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,154 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,154 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,155 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,155 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,155 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,155 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,156 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,157 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,157 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,158 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,160 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,161 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,161 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,161 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,164 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,164 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,164 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,166 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,166 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,166 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,167 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,167 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,167 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,167 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,167 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,168 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,168 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,169 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,169 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,170 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,170 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,170 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,170 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,171 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,171 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,171 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,171 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,172 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,172 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,172 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,173 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,173 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,173 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,173 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,174 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,174 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,174 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,175 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,175 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,175 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,175 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,176 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,176 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,176 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,176 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,176 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,177 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,177 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,177 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,178 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,178 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,178 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,178 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,178 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,179 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,179 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,179 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,181 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,181 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,181 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,182 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,182 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,187 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,187 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,188 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,188 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,188 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,188 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,189 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,190 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,191 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,199 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,199 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,200 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,200 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,200 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,200 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,200 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,202 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,203 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,203 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,203 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:59:11,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 23:59:11,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:59:11,249 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-15 23:59:11,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:59:11,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:59:11,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:59:11,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:59:11,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:59:11,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:59:11,267 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-15 23:59:11,351 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-15 23:59:11,351 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 23:59:11,363 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-15 23:59:11,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 142 transitions, 306 flow [2020-10-15 23:59:11,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 130 transitions, 272 flow [2020-10-15 23:59:11,375 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:59:11,378 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 130 transitions, 272 flow [2020-10-15 23:59:11,381 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 130 transitions, 272 flow [2020-10-15 23:59:11,382 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 126 places, 130 transitions, 272 flow [2020-10-15 23:59:11,439 INFO L129 PetriNetUnfolder]: 10/132 cut-off events. [2020-10-15 23:59:11,439 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 23:59:11,441 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 132 events. 10/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-15 23:59:11,447 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-15 23:59:13,605 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-15 23:59:13,726 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-15 23:59:14,304 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 23:59:14,527 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 23:59:15,172 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2020-10-15 23:59:15,399 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-15 23:59:15,409 INFO L132 LiptonReduction]: Checked pairs total: 9738 [2020-10-15 23:59:15,409 INFO L134 LiptonReduction]: Total number of compositions: 123 [2020-10-15 23:59:15,412 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4039 [2020-10-15 23:59:15,420 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-15 23:59:15,420 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 23:59:15,420 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:15,421 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 23:59:15,422 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:15,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:15,428 INFO L82 PathProgramCache]: Analyzing trace with hash -53310139, now seen corresponding path program 1 times [2020-10-15 23:59:15,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:15,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241230375] [2020-10-15 23:59:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:15,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241230375] [2020-10-15 23:59:15,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:59:15,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 23:59:15,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560285058] [2020-10-15 23:59:15,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:59:15,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:15,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:59:15,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:59:15,692 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-15 23:59:15,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states. [2020-10-15 23:59:15,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:15,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-15 23:59:15,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:15,820 INFO L129 PetriNetUnfolder]: 54/170 cut-off events. [2020-10-15 23:59:15,820 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2020-10-15 23:59:15,822 INFO L80 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 170 events. 54/170 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 621 event pairs, 18 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 259. Up to 71 conditions per place. [2020-10-15 23:59:15,828 INFO L132 encePairwiseOnDemand]: 260/265 looper letters, 15 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2020-10-15 23:59:15,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 126 flow [2020-10-15 23:59:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:59:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-15 23:59:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2020-10-15 23:59:15,854 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7987421383647799 [2020-10-15 23:59:15,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2020-10-15 23:59:15,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2020-10-15 23:59:15,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:15,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2020-10-15 23:59:15,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-15 23:59:15,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-15 23:59:15,880 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-15 23:59:15,883 INFO L185 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 635 transitions. [2020-10-15 23:59:15,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 126 flow [2020-10-15 23:59:15,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-15 23:59:15,889 INFO L241 Difference]: Finished difference. Result has 34 places, 35 transitions, 89 flow [2020-10-15 23:59:15,892 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2020-10-15 23:59:15,893 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2020-10-15 23:59:15,894 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 89 flow [2020-10-15 23:59:15,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:59:15,894 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:15,894 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:15,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 23:59:15,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:15,895 INFO L82 PathProgramCache]: Analyzing trace with hash -718786965, now seen corresponding path program 1 times [2020-10-15 23:59:15,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:15,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815436318] [2020-10-15 23:59:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:15,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815436318] [2020-10-15 23:59:15,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:59:15,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 23:59:15,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969909868] [2020-10-15 23:59:15,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:59:15,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:59:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:59:15,974 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 265 [2020-10-15 23:59:15,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states. [2020-10-15 23:59:15,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:15,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 265 [2020-10-15 23:59:15,975 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:15,997 INFO L129 PetriNetUnfolder]: 12/93 cut-off events. [2020-10-15 23:59:15,997 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2020-10-15 23:59:15,998 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 93 events. 12/93 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 1 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 90. Up to 11 conditions per place. [2020-10-15 23:59:15,999 INFO L132 encePairwiseOnDemand]: 262/265 looper letters, 4 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2020-10-15 23:59:15,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 105 flow [2020-10-15 23:59:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:59:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-15 23:59:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2020-10-15 23:59:16,002 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8616352201257862 [2020-10-15 23:59:16,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2020-10-15 23:59:16,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2020-10-15 23:59:16,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:16,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2020-10-15 23:59:16,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-15 23:59:16,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-15 23:59:16,008 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-15 23:59:16,008 INFO L185 Difference]: Start difference. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states and 685 transitions. [2020-10-15 23:59:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 105 flow [2020-10-15 23:59:16,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-15 23:59:16,012 INFO L241 Difference]: Finished difference. Result has 36 places, 36 transitions, 101 flow [2020-10-15 23:59:16,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2020-10-15 23:59:16,014 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-15 23:59:16,014 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 101 flow [2020-10-15 23:59:16,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:59:16,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:16,014 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:16,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 23:59:16,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:16,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1326023728, now seen corresponding path program 1 times [2020-10-15 23:59:16,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:16,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186256034] [2020-10-15 23:59:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:16,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186256034] [2020-10-15 23:59:16,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410506353] [2020-10-15 23:59:16,170 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 [2020-10-15 23:59:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:16,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 23:59:16,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:16,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:16,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-15 23:59:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049072016] [2020-10-15 23:59:16,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:59:16,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:59:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:59:16,348 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-15 23:59:16,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states. [2020-10-15 23:59:16,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:16,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-15 23:59:16,350 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:16,518 INFO L129 PetriNetUnfolder]: 104/365 cut-off events. [2020-10-15 23:59:16,519 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-10-15 23:59:16,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 365 events. 104/365 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2035 event pairs, 12 based on Foata normal form. 13/336 useless extension candidates. Maximal degree in co-relation 568. Up to 83 conditions per place. [2020-10-15 23:59:16,523 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 25 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2020-10-15 23:59:16,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 247 flow [2020-10-15 23:59:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 23:59:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-15 23:59:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1456 transitions. [2020-10-15 23:59:16,529 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7849056603773585 [2020-10-15 23:59:16,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1456 transitions. [2020-10-15 23:59:16,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1456 transitions. [2020-10-15 23:59:16,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:16,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1456 transitions. [2020-10-15 23:59:16,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-15 23:59:16,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-15 23:59:16,539 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-15 23:59:16,539 INFO L185 Difference]: Start difference. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states and 1456 transitions. [2020-10-15 23:59:16,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 247 flow [2020-10-15 23:59:16,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-15 23:59:16,543 INFO L241 Difference]: Finished difference. Result has 46 places, 46 transitions, 206 flow [2020-10-15 23:59:16,543 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2020-10-15 23:59:16,544 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-15 23:59:16,544 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 206 flow [2020-10-15 23:59:16,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:59:16,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:16,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:16,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-15 23:59:16,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1109506489, now seen corresponding path program 1 times [2020-10-15 23:59:16,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:16,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217823654] [2020-10-15 23:59:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:16,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217823654] [2020-10-15 23:59:16,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:59:16,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:59:16,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641201157] [2020-10-15 23:59:16,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:59:16,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:59:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:59:16,839 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-15 23:59:16,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states. [2020-10-15 23:59:16,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:16,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-15 23:59:16,840 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:16,876 INFO L129 PetriNetUnfolder]: 14/122 cut-off events. [2020-10-15 23:59:16,877 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-15 23:59:16,878 INFO L80 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 122 events. 14/122 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 420 event pairs, 0 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 195. Up to 14 conditions per place. [2020-10-15 23:59:16,879 INFO L132 encePairwiseOnDemand]: 260/265 looper letters, 1 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2020-10-15 23:59:16,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 200 flow [2020-10-15 23:59:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:59:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-15 23:59:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2020-10-15 23:59:16,882 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7836477987421384 [2020-10-15 23:59:16,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2020-10-15 23:59:16,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2020-10-15 23:59:16,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:16,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2020-10-15 23:59:16,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-15 23:59:16,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-15 23:59:16,887 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-15 23:59:16,887 INFO L185 Difference]: Start difference. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states and 623 transitions. [2020-10-15 23:59:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 200 flow [2020-10-15 23:59:16,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 190 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-15 23:59:16,891 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 188 flow [2020-10-15 23:59:16,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2020-10-15 23:59:16,891 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-15 23:59:16,891 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 188 flow [2020-10-15 23:59:16,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:59:16,892 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:16,892 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:16,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 23:59:16,892 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1762703770, now seen corresponding path program 1 times [2020-10-15 23:59:16,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:16,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796229416] [2020-10-15 23:59:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:16,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796229416] [2020-10-15 23:59:16,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:59:16,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:59:16,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103150941] [2020-10-15 23:59:16,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:59:16,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:16,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:59:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:59:16,938 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-15 23:59:16,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states. [2020-10-15 23:59:16,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:16,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-15 23:59:16,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:16,991 INFO L129 PetriNetUnfolder]: 15/130 cut-off events. [2020-10-15 23:59:16,992 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-10-15 23:59:16,992 INFO L80 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 130 events. 15/130 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 476 event pairs, 0 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 251. Up to 35 conditions per place. [2020-10-15 23:59:16,993 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 21 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2020-10-15 23:59:16,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 258 flow [2020-10-15 23:59:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:59:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-15 23:59:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2020-10-15 23:59:16,996 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7987421383647799 [2020-10-15 23:59:16,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2020-10-15 23:59:16,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2020-10-15 23:59:16,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:16,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2020-10-15 23:59:16,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-15 23:59:17,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-15 23:59:17,000 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-15 23:59:17,000 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states and 635 transitions. [2020-10-15 23:59:17,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 258 flow [2020-10-15 23:59:17,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-15 23:59:17,004 INFO L241 Difference]: Finished difference. Result has 49 places, 45 transitions, 218 flow [2020-10-15 23:59:17,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2020-10-15 23:59:17,004 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2020-10-15 23:59:17,005 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 218 flow [2020-10-15 23:59:17,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:59:17,005 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:17,005 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 23:59:17,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 23:59:17,005 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash -253362459, now seen corresponding path program 2 times [2020-10-15 23:59:17,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:17,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850959388] [2020-10-15 23:59:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850959388] [2020-10-15 23:59:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030569736] [2020-10-15 23:59:17,096 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 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 [2020-10-15 23:59:17,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:59:17,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:17,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 23:59:17,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:17,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:17,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-15 23:59:17,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755809088] [2020-10-15 23:59:17,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:59:17,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:17,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:59:17,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:59:17,217 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-15 23:59:17,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states. [2020-10-15 23:59:17,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:17,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-15 23:59:17,219 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:17,341 INFO L129 PetriNetUnfolder]: 18/159 cut-off events. [2020-10-15 23:59:17,342 INFO L130 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2020-10-15 23:59:17,342 INFO L80 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 159 events. 18/159 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 319. Up to 31 conditions per place. [2020-10-15 23:59:17,344 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 31 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2020-10-15 23:59:17,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 394 flow [2020-10-15 23:59:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 23:59:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-15 23:59:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1860 transitions. [2020-10-15 23:59:17,350 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.779874213836478 [2020-10-15 23:59:17,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1860 transitions. [2020-10-15 23:59:17,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1860 transitions. [2020-10-15 23:59:17,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:17,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1860 transitions. [2020-10-15 23:59:17,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-15 23:59:17,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-15 23:59:17,361 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-15 23:59:17,361 INFO L185 Difference]: Start difference. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states and 1860 transitions. [2020-10-15 23:59:17,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 394 flow [2020-10-15 23:59:17,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 372 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-15 23:59:17,365 INFO L241 Difference]: Finished difference. Result has 57 places, 49 transitions, 275 flow [2020-10-15 23:59:17,366 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2020-10-15 23:59:17,366 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2020-10-15 23:59:17,366 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 275 flow [2020-10-15 23:59:17,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:59:17,367 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:17,367 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, 1] [2020-10-15 23:59:17,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:17,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2090411549, now seen corresponding path program 1 times [2020-10-15 23:59:17,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:17,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443674400] [2020-10-15 23:59:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:18,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443674400] [2020-10-15 23:59:18,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:59:18,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 23:59:18,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066276779] [2020-10-15 23:59:18,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 23:59:18,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:18,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 23:59:18,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:59:18,173 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 265 [2020-10-15 23:59:18,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 275 flow. Second operand 15 states. [2020-10-15 23:59:18,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:18,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 265 [2020-10-15 23:59:18,175 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:19,642 INFO L129 PetriNetUnfolder]: 333/850 cut-off events. [2020-10-15 23:59:19,642 INFO L130 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2020-10-15 23:59:19,645 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 850 events. 333/850 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4871 event pairs, 36 based on Foata normal form. 18/849 useless extension candidates. Maximal degree in co-relation 707. Up to 437 conditions per place. [2020-10-15 23:59:19,651 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 87 selfloop transitions, 22 changer transitions 3/124 dead transitions. [2020-10-15 23:59:19,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 732 flow [2020-10-15 23:59:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 23:59:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-15 23:59:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2107 transitions. [2020-10-15 23:59:19,661 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4677025527192009 [2020-10-15 23:59:19,661 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2107 transitions. [2020-10-15 23:59:19,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2107 transitions. [2020-10-15 23:59:19,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:19,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2107 transitions. [2020-10-15 23:59:19,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-15 23:59:19,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-15 23:59:19,677 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-15 23:59:19,677 INFO L185 Difference]: Start difference. First operand has 57 places, 49 transitions, 275 flow. Second operand 17 states and 2107 transitions. [2020-10-15 23:59:19,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 732 flow [2020-10-15 23:59:19,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 703 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-15 23:59:19,690 INFO L241 Difference]: Finished difference. Result has 81 places, 68 transitions, 465 flow [2020-10-15 23:59:19,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=465, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2020-10-15 23:59:19,691 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2020-10-15 23:59:19,691 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 465 flow [2020-10-15 23:59:19,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 23:59:19,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:19,692 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-15 23:59:19,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 23:59:19,692 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2128544112, now seen corresponding path program 3 times [2020-10-15 23:59:19,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:19,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266260194] [2020-10-15 23:59:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:19,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266260194] [2020-10-15 23:59:19,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379849903] [2020-10-15 23:59:19,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-15 23:59:19,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:59:19,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:19,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 23:59:19,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:20,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:20,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-15 23:59:20,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715503641] [2020-10-15 23:59:20,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:59:20,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:59:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:59:20,008 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-15 23:59:20,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 465 flow. Second operand 11 states. [2020-10-15 23:59:20,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:20,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-15 23:59:20,010 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:20,180 INFO L129 PetriNetUnfolder]: 25/246 cut-off events. [2020-10-15 23:59:20,180 INFO L130 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2020-10-15 23:59:20,182 INFO L80 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 246 events. 25/246 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1039 event pairs, 0 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 701. Up to 44 conditions per place. [2020-10-15 23:59:20,183 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 47 selfloop transitions, 20 changer transitions 0/94 dead transitions. [2020-10-15 23:59:20,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 780 flow [2020-10-15 23:59:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 23:59:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-15 23:59:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2273 transitions. [2020-10-15 23:59:20,191 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7797598627787307 [2020-10-15 23:59:20,191 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2273 transitions. [2020-10-15 23:59:20,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2273 transitions. [2020-10-15 23:59:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:20,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2273 transitions. [2020-10-15 23:59:20,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-15 23:59:20,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-15 23:59:20,204 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-15 23:59:20,204 INFO L185 Difference]: Start difference. First operand has 81 places, 68 transitions, 465 flow. Second operand 11 states and 2273 transitions. [2020-10-15 23:59:20,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 780 flow [2020-10-15 23:59:20,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 761 flow, removed 6 selfloop flow, removed 3 redundant places. [2020-10-15 23:59:20,211 INFO L241 Difference]: Finished difference. Result has 90 places, 72 transitions, 547 flow [2020-10-15 23:59:20,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=547, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2020-10-15 23:59:20,212 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2020-10-15 23:59:20,212 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 547 flow [2020-10-15 23:59:20,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:59:20,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:20,212 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:20,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:20,427 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:20,428 INFO L82 PathProgramCache]: Analyzing trace with hash -205644846, now seen corresponding path program 2 times [2020-10-15 23:59:20,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12192376] [2020-10-15 23:59:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12192376] [2020-10-15 23:59:21,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805091764] [2020-10-15 23:59:21,006 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 [2020-10-15 23:59:21,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-15 23:59:21,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:21,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-15 23:59:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:21,151 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 939 treesize of output 907 [2020-10-15 23:59:21,159 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:21,302 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 20 [2020-10-15 23:59:21,303 INFO L625 ElimStorePlain]: treesize reduction 828, result has 2.5 percent of original size [2020-10-15 23:59:21,308 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:21,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-10-15 23:59:21,490 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 23:59:21,490 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:21,514 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.0 percent of original size [2020-10-15 23:59:21,519 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:21,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:54 [2020-10-15 23:59:21,726 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 65 treesize of output 37 [2020-10-15 23:59:21,727 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:21,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:59:21,744 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. [2020-10-15 23:59:21,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:65 [2020-10-15 23:59:22,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 23:59:22,327 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 31 [2020-10-15 23:59:22,354 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:22,360 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 34 [2020-10-15 23:59:22,449 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 23:59:22,659 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 23:59:23,228 INFO L545 ElimStorePlain]: Start of recursive call 3: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:23,323 INFO L625 ElimStorePlain]: treesize reduction 333, result has 17.2 percent of original size [2020-10-15 23:59:23,330 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:23,331 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:178, output treesize:65 [2020-10-15 23:59:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 23:59:23,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 23:59:23,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28 [2020-10-15 23:59:23,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512942080] [2020-10-15 23:59:23,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 23:59:23,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 23:59:23,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2020-10-15 23:59:23,475 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 265 [2020-10-15 23:59:23,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 547 flow. Second operand 15 states. [2020-10-15 23:59:23,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:23,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 265 [2020-10-15 23:59:23,476 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:26,658 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-15 23:59:28,412 INFO L129 PetriNetUnfolder]: 742/1906 cut-off events. [2020-10-15 23:59:28,412 INFO L130 PetriNetUnfolder]: For 4621/4621 co-relation queries the response was YES. [2020-10-15 23:59:28,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6497 conditions, 1906 events. 742/1906 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13094 event pairs, 55 based on Foata normal form. 0/1864 useless extension candidates. Maximal degree in co-relation 5330. Up to 308 conditions per place. [2020-10-15 23:59:28,437 INFO L132 encePairwiseOnDemand]: 249/265 looper letters, 109 selfloop transitions, 95 changer transitions 0/216 dead transitions. [2020-10-15 23:59:28,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 216 transitions, 1765 flow [2020-10-15 23:59:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 23:59:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 23:59:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3293 transitions. [2020-10-15 23:59:28,450 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4602375960866527 [2020-10-15 23:59:28,450 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3293 transitions. [2020-10-15 23:59:28,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3293 transitions. [2020-10-15 23:59:28,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:28,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3293 transitions. [2020-10-15 23:59:28,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 28 states. [2020-10-15 23:59:28,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 28 states. [2020-10-15 23:59:28,468 INFO L81 ComplementDD]: Finished complementDD. Result 28 states. [2020-10-15 23:59:28,469 INFO L185 Difference]: Start difference. First operand has 90 places, 72 transitions, 547 flow. Second operand 27 states and 3293 transitions. [2020-10-15 23:59:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 216 transitions, 1765 flow [2020-10-15 23:59:28,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 216 transitions, 1655 flow, removed 22 selfloop flow, removed 8 redundant places. [2020-10-15 23:59:28,490 INFO L241 Difference]: Finished difference. Result has 118 places, 132 transitions, 1279 flow [2020-10-15 23:59:28,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1279, PETRI_PLACES=118, PETRI_TRANSITIONS=132} [2020-10-15 23:59:28,491 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2020-10-15 23:59:28,491 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 1279 flow [2020-10-15 23:59:28,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 23:59:28,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:28,492 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:28,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:28,707 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash 791706936, now seen corresponding path program 3 times [2020-10-15 23:59:28,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:28,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752569597] [2020-10-15 23:59:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:29,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752569597] [2020-10-15 23:59:29,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876381887] [2020-10-15 23:59:29,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:29,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-15 23:59:29,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:29,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-15 23:59:29,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:29,224 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 23:59:29,225 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:29,247 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 23:59:29,249 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:29,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 23:59:29,583 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 23:59:29,599 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 31 [2020-10-15 23:59:29,616 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:29,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 76 treesize of output 28 [2020-10-15 23:59:29,704 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 23:59:29,976 INFO L545 ElimStorePlain]: Start of recursive call 3: 9 dim-0 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:30,234 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2020-10-15 23:59:30,235 INFO L625 ElimStorePlain]: treesize reduction 101, result has 65.8 percent of original size [2020-10-15 23:59:30,299 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:30,300 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:194 [2020-10-15 23:59:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 23:59:30,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 23:59:30,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-15 23:59:30,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685175528] [2020-10-15 23:59:30,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 23:59:30,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 23:59:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-15 23:59:30,678 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-15 23:59:30,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 132 transitions, 1279 flow. Second operand 13 states. [2020-10-15 23:59:30,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:30,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-15 23:59:30,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:32,369 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-15 23:59:32,604 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-15 23:59:32,791 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-15 23:59:34,333 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-15 23:59:34,944 INFO L129 PetriNetUnfolder]: 804/2065 cut-off events. [2020-10-15 23:59:34,944 INFO L130 PetriNetUnfolder]: For 6010/6012 co-relation queries the response was YES. [2020-10-15 23:59:34,963 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 2065 events. 804/2065 cut-off events. For 6010/6012 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14379 event pairs, 49 based on Foata normal form. 0/2017 useless extension candidates. Maximal degree in co-relation 6264. Up to 447 conditions per place. [2020-10-15 23:59:34,978 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 89 selfloop transitions, 112 changer transitions 0/213 dead transitions. [2020-10-15 23:59:34,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 213 transitions, 2082 flow [2020-10-15 23:59:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 23:59:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 23:59:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3065 transitions. [2020-10-15 23:59:34,989 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48191823899371067 [2020-10-15 23:59:34,990 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3065 transitions. [2020-10-15 23:59:34,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3065 transitions. [2020-10-15 23:59:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:34,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3065 transitions. [2020-10-15 23:59:35,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 25 states. [2020-10-15 23:59:35,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 25 states. [2020-10-15 23:59:35,013 INFO L81 ComplementDD]: Finished complementDD. Result 25 states. [2020-10-15 23:59:35,013 INFO L185 Difference]: Start difference. First operand has 118 places, 132 transitions, 1279 flow. Second operand 24 states and 3065 transitions. [2020-10-15 23:59:35,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 213 transitions, 2082 flow [2020-10-15 23:59:35,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 213 transitions, 1853 flow, removed 77 selfloop flow, removed 9 redundant places. [2020-10-15 23:59:35,060 INFO L241 Difference]: Finished difference. Result has 136 places, 149 transitions, 1517 flow [2020-10-15 23:59:35,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1517, PETRI_PLACES=136, PETRI_TRANSITIONS=149} [2020-10-15 23:59:35,061 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 101 predicate places. [2020-10-15 23:59:35,061 INFO L481 AbstractCegarLoop]: Abstraction has has 136 places, 149 transitions, 1517 flow [2020-10-15 23:59:35,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 23:59:35,062 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:35,062 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:35,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-15 23:59:35,276 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1522883852, now seen corresponding path program 1 times [2020-10-15 23:59:35,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:35,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860130104] [2020-10-15 23:59:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:59:35,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860130104] [2020-10-15 23:59:35,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98155815] [2020-10-15 23:59:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:35,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 23:59:35,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:59:35,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:35,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-15 23:59:35,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668203052] [2020-10-15 23:59:35,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:59:35,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:59:35,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:59:35,472 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-15 23:59:35,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 149 transitions, 1517 flow. Second operand 10 states. [2020-10-15 23:59:35,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:35,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-15 23:59:35,475 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:35,805 INFO L129 PetriNetUnfolder]: 153/846 cut-off events. [2020-10-15 23:59:35,805 INFO L130 PetriNetUnfolder]: For 2273/2273 co-relation queries the response was YES. [2020-10-15 23:59:35,811 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 846 events. 153/846 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5266 event pairs, 3 based on Foata normal form. 4/837 useless extension candidates. Maximal degree in co-relation 2989. Up to 189 conditions per place. [2020-10-15 23:59:35,816 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 114 selfloop transitions, 49 changer transitions 0/211 dead transitions. [2020-10-15 23:59:35,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 211 transitions, 2406 flow [2020-10-15 23:59:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 23:59:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-15 23:59:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2239 transitions. [2020-10-15 23:59:35,820 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7680960548885077 [2020-10-15 23:59:35,820 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2239 transitions. [2020-10-15 23:59:35,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2239 transitions. [2020-10-15 23:59:35,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:35,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2239 transitions. [2020-10-15 23:59:35,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-15 23:59:35,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-15 23:59:35,830 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-15 23:59:35,830 INFO L185 Difference]: Start difference. First operand has 136 places, 149 transitions, 1517 flow. Second operand 11 states and 2239 transitions. [2020-10-15 23:59:35,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 211 transitions, 2406 flow [2020-10-15 23:59:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 211 transitions, 2244 flow, removed 36 selfloop flow, removed 9 redundant places. [2020-10-15 23:59:35,857 INFO L241 Difference]: Finished difference. Result has 142 places, 164 transitions, 1758 flow [2020-10-15 23:59:35,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2020-10-15 23:59:35,857 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 107 predicate places. [2020-10-15 23:59:35,857 INFO L481 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 1758 flow [2020-10-15 23:59:35,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:59:35,858 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:35,858 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-15 23:59:36,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:36,072 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:36,072 INFO L82 PathProgramCache]: Analyzing trace with hash -893249403, now seen corresponding path program 4 times [2020-10-15 23:59:36,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:36,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275566825] [2020-10-15 23:59:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:36,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275566825] [2020-10-15 23:59:36,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112053405] [2020-10-15 23:59:36,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:36,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:59:36,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:36,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 23:59:36,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:36,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:36,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-15 23:59:36,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254852713] [2020-10-15 23:59:36,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 23:59:36,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:36,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 23:59:36,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 23:59:36,299 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-15 23:59:36,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 1758 flow. Second operand 13 states. [2020-10-15 23:59:36,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:36,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-15 23:59:36,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:36,645 INFO L129 PetriNetUnfolder]: 110/788 cut-off events. [2020-10-15 23:59:36,645 INFO L130 PetriNetUnfolder]: For 2565/2565 co-relation queries the response was YES. [2020-10-15 23:59:36,651 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 788 events. 110/788 cut-off events. For 2565/2565 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5203 event pairs, 0 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 2839. Up to 148 conditions per place. [2020-10-15 23:59:36,656 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 128 selfloop transitions, 44 changer transitions 0/221 dead transitions. [2020-10-15 23:59:36,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 2622 flow [2020-10-15 23:59:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:59:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-15 23:59:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2686 transitions. [2020-10-15 23:59:36,663 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7796806966618287 [2020-10-15 23:59:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2686 transitions. [2020-10-15 23:59:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2686 transitions. [2020-10-15 23:59:36,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:36,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2686 transitions. [2020-10-15 23:59:36,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-15 23:59:36,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-15 23:59:36,675 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-15 23:59:36,675 INFO L185 Difference]: Start difference. First operand has 142 places, 164 transitions, 1758 flow. Second operand 13 states and 2686 transitions. [2020-10-15 23:59:36,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 2622 flow [2020-10-15 23:59:36,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 2578 flow, removed 9 selfloop flow, removed 4 redundant places. [2020-10-15 23:59:36,701 INFO L241 Difference]: Finished difference. Result has 152 places, 171 transitions, 1936 flow [2020-10-15 23:59:36,702 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1936, PETRI_PLACES=152, PETRI_TRANSITIONS=171} [2020-10-15 23:59:36,703 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 117 predicate places. [2020-10-15 23:59:36,703 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 171 transitions, 1936 flow [2020-10-15 23:59:36,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 23:59:36,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:36,703 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:36,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:36,916 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:36,917 INFO L82 PathProgramCache]: Analyzing trace with hash -859522357, now seen corresponding path program 1 times [2020-10-15 23:59:36,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:36,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683964372] [2020-10-15 23:59:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:37,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683964372] [2020-10-15 23:59:37,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063594373] [2020-10-15 23:59:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:37,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 72 conjunts are in the unsatisfiable core [2020-10-15 23:59:37,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:37,832 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 81 treesize of output 79 [2020-10-15 23:59:37,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:37,874 INFO L625 ElimStorePlain]: treesize reduction 55, result has 30.4 percent of original size [2020-10-15 23:59:37,878 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:37,878 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:27, output treesize:8 [2020-10-15 23:59:38,077 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 23:59:38,078 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:38,116 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.5 percent of original size [2020-10-15 23:59:38,118 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:38,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:57 [2020-10-15 23:59:38,264 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 61 treesize of output 36 [2020-10-15 23:59:38,265 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:38,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:59:38,287 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. [2020-10-15 23:59:38,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:64 [2020-10-15 23:59:38,856 INFO L350 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-10-15 23:59:38,857 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2020-10-15 23:59:38,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:38,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:59:38,890 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:38,891 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:68 [2020-10-15 23:59:42,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 23:59:42,158 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-15 23:59:42,163 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-15 23:59:42,164 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 34 [2020-10-15 23:59:42,179 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:42,197 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:59:42,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 48 [2020-10-15 23:59:42,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 23:59:42,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 23:59:42,218 INFO L545 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:42,329 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2020-10-15 23:59:42,330 INFO L625 ElimStorePlain]: treesize reduction 128, result has 35.0 percent of original size [2020-10-15 23:59:42,338 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:42,338 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:212, output treesize:44 [2020-10-15 23:59:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:42,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:42,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 40 [2020-10-15 23:59:42,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740354239] [2020-10-15 23:59:42,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 23:59:42,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 23:59:42,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1598, Unknown=1, NotChecked=0, Total=1722 [2020-10-15 23:59:42,466 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 265 [2020-10-15 23:59:42,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 171 transitions, 1936 flow. Second operand 42 states. [2020-10-15 23:59:42,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:42,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 265 [2020-10-15 23:59:42,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:44,505 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-15 23:59:46,324 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2020-10-15 23:59:46,631 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-10-15 23:59:47,180 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2020-10-15 23:59:48,222 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-15 23:59:48,835 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-15 23:59:50,824 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-15 23:59:51,375 INFO L129 PetriNetUnfolder]: 1231/3218 cut-off events. [2020-10-15 23:59:51,375 INFO L130 PetriNetUnfolder]: For 10470/10470 co-relation queries the response was YES. [2020-10-15 23:59:51,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12796 conditions, 3218 events. 1231/3218 cut-off events. For 10470/10470 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24494 event pairs, 209 based on Foata normal form. 27/3159 useless extension candidates. Maximal degree in co-relation 10097. Up to 1861 conditions per place. [2020-10-15 23:59:51,420 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 266 selfloop transitions, 83 changer transitions 14/375 dead transitions. [2020-10-15 23:59:51,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 375 transitions, 4018 flow [2020-10-15 23:59:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 23:59:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 23:59:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4882 transitions. [2020-10-15 23:59:51,428 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.46056603773584903 [2020-10-15 23:59:51,428 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4882 transitions. [2020-10-15 23:59:51,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4882 transitions. [2020-10-15 23:59:51,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:51,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4882 transitions. [2020-10-15 23:59:51,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2020-10-15 23:59:51,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 41 states. [2020-10-15 23:59:51,533 INFO L81 ComplementDD]: Finished complementDD. Result 41 states. [2020-10-15 23:59:51,533 INFO L185 Difference]: Start difference. First operand has 152 places, 171 transitions, 1936 flow. Second operand 40 states and 4882 transitions. [2020-10-15 23:59:51,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 375 transitions, 4018 flow [2020-10-15 23:59:51,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 375 transitions, 3872 flow, removed 22 selfloop flow, removed 10 redundant places. [2020-10-15 23:59:51,590 INFO L241 Difference]: Finished difference. Result has 200 places, 240 transitions, 2908 flow [2020-10-15 23:59:51,591 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2908, PETRI_PLACES=200, PETRI_TRANSITIONS=240} [2020-10-15 23:59:51,591 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 165 predicate places. [2020-10-15 23:59:51,591 INFO L481 AbstractCegarLoop]: Abstraction has has 200 places, 240 transitions, 2908 flow [2020-10-15 23:59:51,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 23:59:51,591 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:51,591 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:51,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-15 23:59:51,805 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:51,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1858710157, now seen corresponding path program 2 times [2020-10-15 23:59:51,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:51,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720039421] [2020-10-15 23:59:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:59:51,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720039421] [2020-10-15 23:59:51,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755789399] [2020-10-15 23:59:51,905 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:51,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:59:51,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:51,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 23:59:51,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:59:52,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:52,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-15 23:59:52,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525621808] [2020-10-15 23:59:52,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:59:52,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:52,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:59:52,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:59:52,026 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-15 23:59:52,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 240 transitions, 2908 flow. Second operand 12 states. [2020-10-15 23:59:52,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:52,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-15 23:59:52,028 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:52,476 INFO L129 PetriNetUnfolder]: 196/1178 cut-off events. [2020-10-15 23:59:52,476 INFO L130 PetriNetUnfolder]: For 5427/5427 co-relation queries the response was YES. [2020-10-15 23:59:52,484 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1178 events. 196/1178 cut-off events. For 5427/5427 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8035 event pairs, 3 based on Foata normal form. 4/1171 useless extension candidates. Maximal degree in co-relation 5021. Up to 190 conditions per place. [2020-10-15 23:59:52,490 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 143 selfloop transitions, 95 changer transitions 0/310 dead transitions. [2020-10-15 23:59:52,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 310 transitions, 4070 flow [2020-10-15 23:59:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 23:59:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-15 23:59:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2847 transitions. [2020-10-15 23:59:52,493 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7673854447439353 [2020-10-15 23:59:52,494 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2847 transitions. [2020-10-15 23:59:52,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2847 transitions. [2020-10-15 23:59:52,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:52,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2847 transitions. [2020-10-15 23:59:52,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-15 23:59:52,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-15 23:59:52,499 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-15 23:59:52,499 INFO L185 Difference]: Start difference. First operand has 200 places, 240 transitions, 2908 flow. Second operand 14 states and 2847 transitions. [2020-10-15 23:59:52,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 310 transitions, 4070 flow [2020-10-15 23:59:52,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 310 transitions, 3863 flow, removed 64 selfloop flow, removed 9 redundant places. [2020-10-15 23:59:52,556 INFO L241 Difference]: Finished difference. Result has 209 places, 254 transitions, 3232 flow [2020-10-15 23:59:52,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3232, PETRI_PLACES=209, PETRI_TRANSITIONS=254} [2020-10-15 23:59:52,557 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 174 predicate places. [2020-10-15 23:59:52,557 INFO L481 AbstractCegarLoop]: Abstraction has has 209 places, 254 transitions, 3232 flow [2020-10-15 23:59:52,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:59:52,558 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:52,558 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:52,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:52,772 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:52,772 INFO L82 PathProgramCache]: Analyzing trace with hash -740479917, now seen corresponding path program 3 times [2020-10-15 23:59:52,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:52,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760652266] [2020-10-15 23:59:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 23:59:52,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760652266] [2020-10-15 23:59:52,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324651557] [2020-10-15 23:59:52,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:52,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:59:52,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:52,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 23:59:52,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 23:59:52,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:52,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-10-15 23:59:52,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885148157] [2020-10-15 23:59:52,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:59:52,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:59:52,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:59:52,978 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-15 23:59:52,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 254 transitions, 3232 flow. Second operand 10 states. [2020-10-15 23:59:52,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:52,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-15 23:59:52,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:53,400 INFO L129 PetriNetUnfolder]: 202/1240 cut-off events. [2020-10-15 23:59:53,400 INFO L130 PetriNetUnfolder]: For 6169/6169 co-relation queries the response was YES. [2020-10-15 23:59:53,407 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 1240 events. 202/1240 cut-off events. For 6169/6169 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8621 event pairs, 3 based on Foata normal form. 3/1232 useless extension candidates. Maximal degree in co-relation 5350. Up to 337 conditions per place. [2020-10-15 23:59:53,413 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 163 selfloop transitions, 64 changer transitions 0/299 dead transitions. [2020-10-15 23:59:53,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 299 transitions, 4187 flow [2020-10-15 23:59:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 23:59:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-15 23:59:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2040 transitions. [2020-10-15 23:59:53,415 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.769811320754717 [2020-10-15 23:59:53,415 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2040 transitions. [2020-10-15 23:59:53,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2040 transitions. [2020-10-15 23:59:53,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:53,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2040 transitions. [2020-10-15 23:59:53,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-15 23:59:53,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-15 23:59:53,422 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-15 23:59:53,422 INFO L185 Difference]: Start difference. First operand has 209 places, 254 transitions, 3232 flow. Second operand 10 states and 2040 transitions. [2020-10-15 23:59:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 299 transitions, 4187 flow [2020-10-15 23:59:53,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 299 transitions, 4010 flow, removed 26 selfloop flow, removed 7 redundant places. [2020-10-15 23:59:53,474 INFO L241 Difference]: Finished difference. Result has 218 places, 265 transitions, 3541 flow [2020-10-15 23:59:53,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3541, PETRI_PLACES=218, PETRI_TRANSITIONS=265} [2020-10-15 23:59:53,474 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 183 predicate places. [2020-10-15 23:59:53,474 INFO L481 AbstractCegarLoop]: Abstraction has has 218 places, 265 transitions, 3541 flow [2020-10-15 23:59:53,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:59:53,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:53,475 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-15 23:59:53,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 23:59:53,676 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:53,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:53,676 INFO L82 PathProgramCache]: Analyzing trace with hash 31641840, now seen corresponding path program 5 times [2020-10-15 23:59:53,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:53,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967564869] [2020-10-15 23:59:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:53,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967564869] [2020-10-15 23:59:53,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215654148] [2020-10-15 23:59:53,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:53,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-15 23:59:53,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:59:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 23:59:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-15 23:59:53,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417852467] [2020-10-15 23:59:53,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 23:59:53,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:53,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 23:59:53,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:59:53,926 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 265 [2020-10-15 23:59:53,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 265 transitions, 3541 flow. Second operand 8 states. [2020-10-15 23:59:53,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:53,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 265 [2020-10-15 23:59:53,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:54,307 INFO L129 PetriNetUnfolder]: 203/1851 cut-off events. [2020-10-15 23:59:54,307 INFO L130 PetriNetUnfolder]: For 11250/11303 co-relation queries the response was YES. [2020-10-15 23:59:54,322 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7904 conditions, 1851 events. 203/1851 cut-off events. For 11250/11303 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14558 event pairs, 0 based on Foata normal form. 89/1940 useless extension candidates. Maximal degree in co-relation 7476. Up to 219 conditions per place. [2020-10-15 23:59:54,329 INFO L132 encePairwiseOnDemand]: 261/265 looper letters, 31 selfloop transitions, 13 changer transitions 6/282 dead transitions. [2020-10-15 23:59:54,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 282 transitions, 3730 flow [2020-10-15 23:59:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 23:59:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-15 23:59:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1795 transitions. [2020-10-15 23:59:54,331 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8466981132075472 [2020-10-15 23:59:54,332 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1795 transitions. [2020-10-15 23:59:54,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1795 transitions. [2020-10-15 23:59:54,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-15 23:59:54,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1795 transitions. [2020-10-15 23:59:54,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-15 23:59:54,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-15 23:59:54,337 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-15 23:59:54,337 INFO L185 Difference]: Start difference. First operand has 218 places, 265 transitions, 3541 flow. Second operand 8 states and 1795 transitions. [2020-10-15 23:59:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 282 transitions, 3730 flow [2020-10-15 23:59:54,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 282 transitions, 3683 flow, removed 20 selfloop flow, removed 2 redundant places. [2020-10-15 23:59:54,413 INFO L241 Difference]: Finished difference. Result has 224 places, 262 transitions, 3358 flow [2020-10-15 23:59:54,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3407, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3358, PETRI_PLACES=224, PETRI_TRANSITIONS=262} [2020-10-15 23:59:54,414 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2020-10-15 23:59:54,414 INFO L481 AbstractCegarLoop]: Abstraction has has 224 places, 262 transitions, 3358 flow [2020-10-15 23:59:54,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 23:59:54,414 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-15 23:59:54,414 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:59:54,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-15 23:59:54,615 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:59:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:59:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 288849882, now seen corresponding path program 2 times [2020-10-15 23:59:54,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:59:54,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061356203] [2020-10-15 23:59:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:59:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:59:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:59:55,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061356203] [2020-10-15 23:59:55,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189175743] [2020-10-15 23:59:55,256 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:59:55,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:59:55,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:59:55,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-15 23:59:55,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:59:55,515 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 23:59:55,515 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:55,543 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 23:59:55,545 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:55,546 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 23:59:56,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 23:59:56,045 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 69 treesize of output 41 [2020-10-15 23:59:56,046 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:59:56,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:59:56,081 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:59:56,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 23:59:56,911 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 23:59:56,930 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 31 [2020-10-15 23:59:56,976 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 23:59:57,349 INFO L545 ElimStorePlain]: Start of recursive call 2: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:57,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 76 treesize of output 28 [2020-10-15 23:59:57,377 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:57,462 INFO L625 ElimStorePlain]: treesize reduction 286, result has 14.6 percent of original size [2020-10-15 23:59:57,464 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:59:57,464 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:49 [2020-10-15 23:59:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 23:59:57,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:59:57,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-10-15 23:59:57,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959639913] [2020-10-15 23:59:57,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 23:59:57,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:59:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 23:59:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:59:57,554 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-15 23:59:57,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 262 transitions, 3358 flow. Second operand 39 states. [2020-10-15 23:59:57,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-15 23:59:57,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-15 23:59:57,556 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-15 23:59:59,153 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-15 23:59:59,365 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-15 23:59:59,560 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-16 00:00:01,154 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-16 00:00:01,477 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-16 00:00:01,996 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 00:00:02,770 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-16 00:00:03,207 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-16 00:00:03,803 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-16 00:00:04,049 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-16 00:00:04,352 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 00:00:06,187 INFO L129 PetriNetUnfolder]: 2710/7350 cut-off events. [2020-10-16 00:00:06,187 INFO L130 PetriNetUnfolder]: For 40545/40560 co-relation queries the response was YES. [2020-10-16 00:00:06,246 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32965 conditions, 7350 events. 2710/7350 cut-off events. For 40545/40560 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 63423 event pairs, 146 based on Foata normal form. 34/7262 useless extension candidates. Maximal degree in co-relation 31657. Up to 1143 conditions per place. [2020-10-16 00:00:06,277 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 153 selfloop transitions, 265 changer transitions 6/446 dead transitions. [2020-10-16 00:00:06,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 446 transitions, 5668 flow [2020-10-16 00:00:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 00:00:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 00:00:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5102 transitions. [2020-10-16 00:00:06,284 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48132075471698116 [2020-10-16 00:00:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5102 transitions. [2020-10-16 00:00:06,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5102 transitions. [2020-10-16 00:00:06,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:06,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5102 transitions. [2020-10-16 00:00:06,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2020-10-16 00:00:06,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 41 states. [2020-10-16 00:00:06,301 INFO L81 ComplementDD]: Finished complementDD. Result 41 states. [2020-10-16 00:00:06,301 INFO L185 Difference]: Start difference. First operand has 224 places, 262 transitions, 3358 flow. Second operand 40 states and 5102 transitions. [2020-10-16 00:00:06,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 446 transitions, 5668 flow [2020-10-16 00:00:06,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 446 transitions, 5655 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:00:06,543 INFO L241 Difference]: Finished difference. Result has 266 places, 326 transitions, 4880 flow [2020-10-16 00:00:06,544 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4880, PETRI_PLACES=266, PETRI_TRANSITIONS=326} [2020-10-16 00:00:06,545 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 231 predicate places. [2020-10-16 00:00:06,545 INFO L481 AbstractCegarLoop]: Abstraction has has 266 places, 326 transitions, 4880 flow [2020-10-16 00:00:06,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-16 00:00:06,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:06,545 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:06,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 00:00:06,760 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:06,761 INFO L82 PathProgramCache]: Analyzing trace with hash -600031886, now seen corresponding path program 4 times [2020-10-16 00:00:06,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:06,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082203064] [2020-10-16 00:00:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 00:00:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082203064] [2020-10-16 00:00:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15622287] [2020-10-16 00:00:06,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:06,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 00:00:06,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:00:06,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 00:00:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-16 00:00:07,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 00:00:07,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-10-16 00:00:07,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712265283] [2020-10-16 00:00:07,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 00:00:07,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:07,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 00:00:07,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-16 00:00:07,041 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 00:00:07,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 326 transitions, 4880 flow. Second operand 6 states. [2020-10-16 00:00:07,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:07,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 00:00:07,042 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:08,430 INFO L129 PetriNetUnfolder]: 280/2415 cut-off events. [2020-10-16 00:00:08,431 INFO L130 PetriNetUnfolder]: For 18015/18015 co-relation queries the response was YES. [2020-10-16 00:00:08,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12712 conditions, 2415 events. 280/2415 cut-off events. For 18015/18015 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20048 event pairs, 16 based on Foata normal form. 5/2418 useless extension candidates. Maximal degree in co-relation 12167. Up to 309 conditions per place. [2020-10-16 00:00:08,456 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 100 selfloop transitions, 169 changer transitions 2/363 dead transitions. [2020-10-16 00:00:08,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 363 transitions, 5854 flow [2020-10-16 00:00:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 00:00:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 00:00:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1628 transitions. [2020-10-16 00:00:08,459 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7679245283018868 [2020-10-16 00:00:08,459 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1628 transitions. [2020-10-16 00:00:08,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1628 transitions. [2020-10-16 00:00:08,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:08,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1628 transitions. [2020-10-16 00:00:08,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 00:00:08,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 00:00:08,463 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 00:00:08,463 INFO L185 Difference]: Start difference. First operand has 266 places, 326 transitions, 4880 flow. Second operand 8 states and 1628 transitions. [2020-10-16 00:00:08,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 363 transitions, 5854 flow [2020-10-16 00:00:08,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 363 transitions, 5562 flow, removed 88 selfloop flow, removed 11 redundant places. [2020-10-16 00:00:08,606 INFO L241 Difference]: Finished difference. Result has 265 places, 337 transitions, 5219 flow [2020-10-16 00:00:08,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5219, PETRI_PLACES=265, PETRI_TRANSITIONS=337} [2020-10-16 00:00:08,607 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 230 predicate places. [2020-10-16 00:00:08,607 INFO L481 AbstractCegarLoop]: Abstraction has has 265 places, 337 transitions, 5219 flow [2020-10-16 00:00:08,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 00:00:08,607 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:08,608 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:08,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 00:00:08,822 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:08,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1665896900, now seen corresponding path program 5 times [2020-10-16 00:00:08,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:08,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518508578] [2020-10-16 00:00:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 00:00:08,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518508578] [2020-10-16 00:00:08,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086744598] [2020-10-16 00:00:08,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:09,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 00:00:09,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:00:09,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 00:00:09,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 00:00:09,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:00:09,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 00:00:09,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625798043] [2020-10-16 00:00:09,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 00:00:09,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:09,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 00:00:09,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 00:00:09,105 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 00:00:09,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 337 transitions, 5219 flow. Second operand 12 states. [2020-10-16 00:00:09,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:09,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 00:00:09,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:09,821 INFO L129 PetriNetUnfolder]: 282/2402 cut-off events. [2020-10-16 00:00:09,822 INFO L130 PetriNetUnfolder]: For 19521/19521 co-relation queries the response was YES. [2020-10-16 00:00:09,846 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 2402 events. 282/2402 cut-off events. For 19521/19521 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19928 event pairs, 3 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 11749. Up to 317 conditions per place. [2020-10-16 00:00:09,856 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 203 selfloop transitions, 117 changer transitions 2/414 dead transitions. [2020-10-16 00:00:09,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 414 transitions, 6699 flow [2020-10-16 00:00:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 00:00:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 00:00:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2647 transitions. [2020-10-16 00:00:09,863 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7683599419448476 [2020-10-16 00:00:09,863 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2647 transitions. [2020-10-16 00:00:09,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2647 transitions. [2020-10-16 00:00:09,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:09,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2647 transitions. [2020-10-16 00:00:09,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 00:00:09,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 00:00:09,870 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 00:00:09,870 INFO L185 Difference]: Start difference. First operand has 265 places, 337 transitions, 5219 flow. Second operand 13 states and 2647 transitions. [2020-10-16 00:00:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 414 transitions, 6699 flow [2020-10-16 00:00:10,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 414 transitions, 6647 flow, removed 26 selfloop flow, removed 0 redundant places. [2020-10-16 00:00:10,035 INFO L241 Difference]: Finished difference. Result has 279 places, 342 transitions, 5559 flow [2020-10-16 00:00:10,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5169, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5559, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2020-10-16 00:00:10,036 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 244 predicate places. [2020-10-16 00:00:10,036 INFO L481 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 5559 flow [2020-10-16 00:00:10,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 00:00:10,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:10,036 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:10,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:10,252 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1156227768, now seen corresponding path program 6 times [2020-10-16 00:00:10,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:10,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264880818] [2020-10-16 00:00:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 00:00:10,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264880818] [2020-10-16 00:00:10,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148377582] [2020-10-16 00:00:10,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:10,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-16 00:00:10,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:00:10,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 00:00:10,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 00:00:10,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:00:10,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-16 00:00:10,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144364110] [2020-10-16 00:00:10,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 00:00:10,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 00:00:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 00:00:10,532 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 00:00:10,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 5559 flow. Second operand 12 states. [2020-10-16 00:00:10,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:10,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 00:00:10,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:11,305 INFO L129 PetriNetUnfolder]: 286/2427 cut-off events. [2020-10-16 00:00:11,305 INFO L130 PetriNetUnfolder]: For 21147/21147 co-relation queries the response was YES. [2020-10-16 00:00:11,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13329 conditions, 2427 events. 286/2427 cut-off events. For 21147/21147 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 20184 event pairs, 3 based on Foata normal form. 1/2426 useless extension candidates. Maximal degree in co-relation 12192. Up to 574 conditions per place. [2020-10-16 00:00:11,335 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 220 selfloop transitions, 81 changer transitions 2/395 dead transitions. [2020-10-16 00:00:11,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 395 transitions, 6729 flow [2020-10-16 00:00:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 00:00:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-16 00:00:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2448 transitions. [2020-10-16 00:00:11,337 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.769811320754717 [2020-10-16 00:00:11,337 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2448 transitions. [2020-10-16 00:00:11,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2448 transitions. [2020-10-16 00:00:11,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:11,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2448 transitions. [2020-10-16 00:00:11,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-16 00:00:11,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-16 00:00:11,342 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-16 00:00:11,342 INFO L185 Difference]: Start difference. First operand has 279 places, 342 transitions, 5559 flow. Second operand 12 states and 2448 transitions. [2020-10-16 00:00:11,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 395 transitions, 6729 flow [2020-10-16 00:00:11,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 395 transitions, 6564 flow, removed 16 selfloop flow, removed 6 redundant places. [2020-10-16 00:00:11,463 INFO L241 Difference]: Finished difference. Result has 286 places, 346 transitions, 5687 flow [2020-10-16 00:00:11,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5687, PETRI_PLACES=286, PETRI_TRANSITIONS=346} [2020-10-16 00:00:11,464 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 251 predicate places. [2020-10-16 00:00:11,464 INFO L481 AbstractCegarLoop]: Abstraction has has 286 places, 346 transitions, 5687 flow [2020-10-16 00:00:11,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 00:00:11,464 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:11,464 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:11,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:11,678 INFO L429 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:11,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:11,679 INFO L82 PathProgramCache]: Analyzing trace with hash 185392235, now seen corresponding path program 3 times [2020-10-16 00:00:11,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:11,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905321687] [2020-10-16 00:00:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:00:12,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905321687] [2020-10-16 00:00:12,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014604801] [2020-10-16 00:00:12,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:12,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 00:00:12,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:00:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 81 conjunts are in the unsatisfiable core [2020-10-16 00:00:12,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:13,184 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 00:00:13,184 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:13,221 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.9 percent of original size [2020-10-16 00:00:13,222 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:00:13,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:53 [2020-10-16 00:00:13,814 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:13,815 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 76 [2020-10-16 00:00:13,821 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 00:00:13,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 00:00:13,830 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:13,903 INFO L625 ElimStorePlain]: treesize reduction 37, result has 67.8 percent of original size [2020-10-16 00:00:13,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:13,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:13,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:13,910 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:13,910 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:67 [2020-10-16 00:00:13,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:13,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:13,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:14,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:14,036 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:14,043 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:14,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:14,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,690 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-10-16 00:00:14,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,709 INFO L441 ElimStorePlain]: Different costs {0=[v_prenex_3], 2=[|v_#memory_int_100|]} [2020-10-16 00:00:14,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-16 00:00:14,715 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:14,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:14,780 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:14,780 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 77 [2020-10-16 00:00:14,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-16 00:00:14,782 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:14,908 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 00:00:14,909 INFO L625 ElimStorePlain]: treesize reduction 33, result has 79.4 percent of original size [2020-10-16 00:00:14,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,917 INFO L545 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-10-16 00:00:14,918 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 11 variables, input treesize:109, output treesize:98 [2020-10-16 00:00:14,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,922 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:14,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 00:00:15,650 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,762 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:15,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:00:16,789 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 00:00:16,790 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 00:00:16,791 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 29 [2020-10-16 00:00:16,794 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:16,807 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:16,807 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 80 treesize of output 48 [2020-10-16 00:00:16,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-16 00:00:16,811 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:16,920 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-10-16 00:00:16,921 INFO L625 ElimStorePlain]: treesize reduction 164, result has 23.4 percent of original size [2020-10-16 00:00:16,931 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:16,932 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:186, output treesize:83 [2020-10-16 00:00:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:00:17,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:00:17,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 50 [2020-10-16 00:00:17,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407852654] [2020-10-16 00:00:17,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-16 00:00:17,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:17,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-16 00:00:17,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 00:00:17,423 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 00:00:17,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 346 transitions, 5687 flow. Second operand 52 states. [2020-10-16 00:00:17,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:17,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 00:00:17,427 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:20,991 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-16 00:00:21,433 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-16 00:00:23,132 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-16 00:00:24,653 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-16 00:00:26,982 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 00:00:27,249 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-16 00:00:27,555 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-16 00:00:29,751 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-16 00:00:34,982 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-16 00:00:39,467 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2020-10-16 00:00:39,958 INFO L129 PetriNetUnfolder]: 2647/7591 cut-off events. [2020-10-16 00:00:39,958 INFO L130 PetriNetUnfolder]: For 60068/60075 co-relation queries the response was YES. [2020-10-16 00:00:40,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37949 conditions, 7591 events. 2647/7591 cut-off events. For 60068/60075 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 67322 event pairs, 206 based on Foata normal form. 235/7744 useless extension candidates. Maximal degree in co-relation 34941. Up to 1198 conditions per place. [2020-10-16 00:00:40,045 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 234 selfloop transitions, 237 changer transitions 113/605 dead transitions. [2020-10-16 00:00:40,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 605 transitions, 8665 flow [2020-10-16 00:00:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-16 00:00:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 00:00:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6654 transitions. [2020-10-16 00:00:40,056 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48287373004354134 [2020-10-16 00:00:40,056 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6654 transitions. [2020-10-16 00:00:40,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6654 transitions. [2020-10-16 00:00:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:40,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6654 transitions. [2020-10-16 00:00:40,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 53 states. [2020-10-16 00:00:40,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 53 states. [2020-10-16 00:00:40,072 INFO L81 ComplementDD]: Finished complementDD. Result 53 states. [2020-10-16 00:00:40,072 INFO L185 Difference]: Start difference. First operand has 286 places, 346 transitions, 5687 flow. Second operand 52 states and 6654 transitions. [2020-10-16 00:00:40,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 605 transitions, 8665 flow [2020-10-16 00:00:40,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 605 transitions, 8337 flow, removed 52 selfloop flow, removed 14 redundant places. [2020-10-16 00:00:40,299 INFO L241 Difference]: Finished difference. Result has 357 places, 377 transitions, 6594 flow [2020-10-16 00:00:40,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6594, PETRI_PLACES=357, PETRI_TRANSITIONS=377} [2020-10-16 00:00:40,299 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 322 predicate places. [2020-10-16 00:00:40,299 INFO L481 AbstractCegarLoop]: Abstraction has has 357 places, 377 transitions, 6594 flow [2020-10-16 00:00:40,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-16 00:00:40,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:40,300 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:40,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:40,506 INFO L429 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1338264591, now seen corresponding path program 7 times [2020-10-16 00:00:40,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:40,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903823902] [2020-10-16 00:00:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 00:00:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903823902] [2020-10-16 00:00:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123569498] [2020-10-16 00:00:40,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:40,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 00:00:40,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 00:00:40,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:00:40,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-10-16 00:00:40,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985135640] [2020-10-16 00:00:40,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 00:00:40,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:40,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 00:00:40,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 00:00:40,815 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 00:00:40,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 377 transitions, 6594 flow. Second operand 15 states. [2020-10-16 00:00:40,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:40,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 00:00:40,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:41,792 INFO L129 PetriNetUnfolder]: 194/2413 cut-off events. [2020-10-16 00:00:41,792 INFO L130 PetriNetUnfolder]: For 25316/25316 co-relation queries the response was YES. [2020-10-16 00:00:41,820 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14640 conditions, 2413 events. 194/2413 cut-off events. For 25316/25316 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20458 event pairs, 3 based on Foata normal form. 2/2413 useless extension candidates. Maximal degree in co-relation 14500. Up to 317 conditions per place. [2020-10-16 00:00:41,824 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 120 selfloop transitions, 72 changer transitions 192/467 dead transitions. [2020-10-16 00:00:41,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 467 transitions, 8622 flow [2020-10-16 00:00:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 00:00:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-16 00:00:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3451 transitions. [2020-10-16 00:00:41,833 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660377358490567 [2020-10-16 00:00:41,833 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3451 transitions. [2020-10-16 00:00:41,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3451 transitions. [2020-10-16 00:00:41,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:00:41,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3451 transitions. [2020-10-16 00:00:41,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-16 00:00:41,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-16 00:00:41,842 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-16 00:00:41,842 INFO L185 Difference]: Start difference. First operand has 357 places, 377 transitions, 6594 flow. Second operand 17 states and 3451 transitions. [2020-10-16 00:00:41,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 467 transitions, 8622 flow [2020-10-16 00:00:42,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 467 transitions, 7770 flow, removed 159 selfloop flow, removed 27 redundant places. [2020-10-16 00:00:42,011 INFO L241 Difference]: Finished difference. Result has 337 places, 228 transitions, 3441 flow [2020-10-16 00:00:42,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5815, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3441, PETRI_PLACES=337, PETRI_TRANSITIONS=228} [2020-10-16 00:00:42,012 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 302 predicate places. [2020-10-16 00:00:42,012 INFO L481 AbstractCegarLoop]: Abstraction has has 337 places, 228 transitions, 3441 flow [2020-10-16 00:00:42,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 00:00:42,012 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:00:42,012 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:00:42,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 00:00:42,213 INFO L429 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:00:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:00:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1634728654, now seen corresponding path program 4 times [2020-10-16 00:00:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:00:42,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660486596] [2020-10-16 00:00:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:00:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:00:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:00:43,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660486596] [2020-10-16 00:00:43,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045699061] [2020-10-16 00:00:43,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:00:43,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 00:00:43,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:00:43,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-16 00:00:43,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:00:43,757 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 00:00:43,757 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:43,794 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 00:00:43,795 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:00:43,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 00:00:44,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:00:44,337 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 69 treesize of output 41 [2020-10-16 00:00:44,337 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:44,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:44,367 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:00:44,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 00:00:44,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:00:44,843 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 69 treesize of output 41 [2020-10-16 00:00:44,844 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:00:44,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:00:44,879 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:00:44,879 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 00:00:45,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 00:00:45,874 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 31 [2020-10-16 00:00:45,891 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:45,898 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 76 treesize of output 28 [2020-10-16 00:00:45,906 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:46,002 INFO L625 ElimStorePlain]: treesize reduction 106, result has 38.0 percent of original size [2020-10-16 00:00:46,005 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:00:46,005 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:65 [2020-10-16 00:00:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 00:00:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:00:46,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 50 [2020-10-16 00:00:46,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207433585] [2020-10-16 00:00:46,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-16 00:00:46,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:00:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-16 00:00:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2383, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 00:00:46,203 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 00:00:46,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 228 transitions, 3441 flow. Second operand 51 states. [2020-10-16 00:00:46,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:00:46,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 00:00:46,207 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:00:48,363 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-16 00:00:48,649 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-16 00:00:49,045 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 00:00:49,810 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 00:00:51,616 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-10-16 00:00:52,200 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-10-16 00:00:52,766 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-16 00:00:53,011 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-16 00:00:53,337 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-16 00:00:53,728 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-16 00:00:55,086 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-16 00:00:55,905 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-16 00:00:56,416 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2020-10-16 00:00:57,055 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-10-16 00:00:57,626 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 00:00:57,960 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-16 00:00:58,503 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-16 00:00:58,814 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-16 00:00:59,172 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-16 00:00:59,551 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-16 00:01:00,093 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-16 00:01:00,386 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 00:01:01,043 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-16 00:01:02,070 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-16 00:01:02,539 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-10-16 00:01:02,947 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-16 00:01:03,888 INFO L129 PetriNetUnfolder]: 926/2668 cut-off events. [2020-10-16 00:01:03,888 INFO L130 PetriNetUnfolder]: For 17319/17321 co-relation queries the response was YES. [2020-10-16 00:01:03,914 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 2668 events. 926/2668 cut-off events. For 17319/17321 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 18711 event pairs, 44 based on Foata normal form. 10/2639 useless extension candidates. Maximal degree in co-relation 13574. Up to 440 conditions per place. [2020-10-16 00:01:03,920 INFO L132 encePairwiseOnDemand]: 251/265 looper letters, 134 selfloop transitions, 214 changer transitions 32/399 dead transitions. [2020-10-16 00:01:03,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 399 transitions, 5047 flow [2020-10-16 00:01:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-16 00:01:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 00:01:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 6874 transitions. [2020-10-16 00:01:03,931 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4803633822501747 [2020-10-16 00:01:03,931 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 6874 transitions. [2020-10-16 00:01:03,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 6874 transitions. [2020-10-16 00:01:03,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:03,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 6874 transitions. [2020-10-16 00:01:03,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 55 states. [2020-10-16 00:01:03,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 55 states. [2020-10-16 00:01:03,946 INFO L81 ComplementDD]: Finished complementDD. Result 55 states. [2020-10-16 00:01:03,946 INFO L185 Difference]: Start difference. First operand has 337 places, 228 transitions, 3441 flow. Second operand 54 states and 6874 transitions. [2020-10-16 00:01:03,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 399 transitions, 5047 flow [2020-10-16 00:01:04,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 399 transitions, 4318 flow, removed 113 selfloop flow, removed 82 redundant places. [2020-10-16 00:01:04,045 INFO L241 Difference]: Finished difference. Result has 302 places, 261 transitions, 3699 flow [2020-10-16 00:01:04,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3699, PETRI_PLACES=302, PETRI_TRANSITIONS=261} [2020-10-16 00:01:04,045 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 267 predicate places. [2020-10-16 00:01:04,046 INFO L481 AbstractCegarLoop]: Abstraction has has 302 places, 261 transitions, 3699 flow [2020-10-16 00:01:04,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-16 00:01:04,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:04,046 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:04,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 00:01:04,259 INFO L429 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1141164033, now seen corresponding path program 5 times [2020-10-16 00:01:04,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:04,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353145429] [2020-10-16 00:01:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:06,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353145429] [2020-10-16 00:01:06,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014869645] [2020-10-16 00:01:06,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:01:06,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 00:01:06,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:01:06,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 94 conjunts are in the unsatisfiable core [2020-10-16 00:01:06,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:01:06,783 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 00:01:06,783 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:01:06,825 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 00:01:06,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:01:06,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 00:01:07,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:01:07,709 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 69 treesize of output 41 [2020-10-16 00:01:07,710 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:01:07,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:01:07,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:01:07,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 00:01:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:01:08,503 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 69 treesize of output 41 [2020-10-16 00:01:08,504 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:01:08,535 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:01:08,537 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:01:08,537 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 00:01:09,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:01:09,392 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 69 treesize of output 41 [2020-10-16 00:01:09,393 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:01:09,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:01:09,431 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:01:09,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 00:01:11,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 00:01:11,087 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 76 treesize of output 28 [2020-10-16 00:01:11,098 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:01:11,104 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 31 [2020-10-16 00:01:11,114 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:01:11,217 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-16 00:01:11,218 INFO L625 ElimStorePlain]: treesize reduction 80, result has 39.8 percent of original size [2020-10-16 00:01:11,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:01:11,220 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:53 [2020-10-16 00:01:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:11,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:01:11,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2020-10-16 00:01:11,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153928182] [2020-10-16 00:01:11,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-16 00:01:11,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:11,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-16 00:01:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2020-10-16 00:01:11,473 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 00:01:11,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 261 transitions, 3699 flow. Second operand 61 states. [2020-10-16 00:01:11,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:11,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 00:01:11,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:12,940 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-16 00:01:14,040 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-16 00:01:14,696 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-16 00:01:15,510 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-16 00:01:15,851 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-16 00:01:16,493 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-16 00:01:16,856 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-16 00:01:17,458 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-16 00:01:17,968 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-16 00:01:18,385 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-16 00:01:21,145 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-16 00:01:21,729 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-16 00:01:22,739 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-16 00:01:24,104 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-16 00:01:24,658 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-16 00:01:25,458 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-16 00:01:26,333 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-16 00:01:26,592 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-16 00:01:27,564 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 00:01:28,324 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-16 00:01:29,229 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-16 00:01:29,490 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-16 00:01:30,629 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-16 00:01:31,601 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-16 00:01:32,994 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-16 00:01:33,565 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-16 00:01:33,847 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-16 00:01:35,525 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-10-16 00:01:36,542 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-16 00:01:37,658 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-16 00:01:39,243 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-10-16 00:01:40,173 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-16 00:01:40,606 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-16 00:01:42,137 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-16 00:01:43,077 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-16 00:01:44,040 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-16 00:01:45,280 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-16 00:01:46,319 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-16 00:01:47,104 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-16 00:01:48,903 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-16 00:01:50,166 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-16 00:01:51,960 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-16 00:01:52,968 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 00:01:53,525 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-16 00:01:56,396 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-16 00:01:57,753 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-16 00:01:59,110 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 00:02:00,767 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-16 00:02:02,708 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-16 00:02:03,977 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-16 00:02:04,854 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-16 00:02:06,912 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-16 00:02:08,393 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-16 00:02:10,727 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-16 00:02:12,414 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-16 00:02:14,013 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-16 00:02:16,196 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-16 00:02:18,495 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 00:02:19,472 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 00:02:20,903 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-16 00:02:23,061 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-16 00:02:25,553 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-16 00:02:27,322 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-16 00:02:28,718 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-16 00:02:31,278 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2020-10-16 00:02:32,566 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-16 00:02:34,830 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-16 00:02:36,937 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-16 00:02:39,766 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-16 00:02:42,583 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-16 00:02:44,494 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-16 00:02:46,806 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-16 00:02:49,045 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-16 00:02:50,947 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-16 00:02:52,067 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 00:02:53,600 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-16 00:02:55,284 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-16 00:02:56,433 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 00:02:57,687 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-16 00:02:59,288 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-16 00:03:00,565 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-16 00:03:01,485 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 00:03:02,855 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 00:03:04,966 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-16 00:03:05,888 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 00:03:07,054 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 00:03:07,465 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-16 00:03:08,040 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-16 00:03:08,725 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-16 00:03:09,274 INFO L129 PetriNetUnfolder]: 997/2943 cut-off events. [2020-10-16 00:03:09,275 INFO L130 PetriNetUnfolder]: For 13188/13190 co-relation queries the response was YES. [2020-10-16 00:03:09,291 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14447 conditions, 2943 events. 997/2943 cut-off events. For 13188/13190 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21122 event pairs, 66 based on Foata normal form. 24/2916 useless extension candidates. Maximal degree in co-relation 13542. Up to 489 conditions per place. [2020-10-16 00:03:09,294 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 138 selfloop transitions, 97 changer transitions 329/583 dead transitions. [2020-10-16 00:03:09,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 583 transitions, 6524 flow [2020-10-16 00:03:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-10-16 00:03:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 00:03:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 12588 transitions. [2020-10-16 00:03:09,309 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.47981703830760436 [2020-10-16 00:03:09,309 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 12588 transitions. [2020-10-16 00:03:09,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 12588 transitions. [2020-10-16 00:03:09,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:03:09,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 12588 transitions. [2020-10-16 00:03:09,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 100 states. [2020-10-16 00:03:09,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 100 states. [2020-10-16 00:03:09,335 INFO L81 ComplementDD]: Finished complementDD. Result 100 states. [2020-10-16 00:03:09,335 INFO L185 Difference]: Start difference. First operand has 302 places, 261 transitions, 3699 flow. Second operand 99 states and 12588 transitions. [2020-10-16 00:03:09,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 583 transitions, 6524 flow [2020-10-16 00:03:09,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 583 transitions, 6050 flow, removed 96 selfloop flow, removed 28 redundant places. [2020-10-16 00:03:09,415 INFO L241 Difference]: Finished difference. Result has 382 places, 140 transitions, 1628 flow [2020-10-16 00:03:09,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1628, PETRI_PLACES=382, PETRI_TRANSITIONS=140} [2020-10-16 00:03:09,416 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 347 predicate places. [2020-10-16 00:03:09,416 INFO L481 AbstractCegarLoop]: Abstraction has has 382 places, 140 transitions, 1628 flow [2020-10-16 00:03:09,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-16 00:03:09,416 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:03:09,416 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:03:09,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 00:03:09,617 INFO L429 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:03:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:03:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash -247179633, now seen corresponding path program 6 times [2020-10-16 00:03:09,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:03:09,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176129392] [2020-10-16 00:03:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:03:10,535 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-10-16 00:03:11,115 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-16 00:03:11,805 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-16 00:03:12,606 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-16 00:03:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:03:14,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176129392] [2020-10-16 00:03:14,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564666404] [2020-10-16 00:03:14,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 00:03:14,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-16 00:03:14,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 00:03:14,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 121 conjunts are in the unsatisfiable core [2020-10-16 00:03:14,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 00:03:14,697 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-16 00:03:14,697 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:14,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:14,724 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:03:14,725 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-10-16 00:03:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:03:15,316 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 30 treesize of output 25 [2020-10-16 00:03:15,316 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:15,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:15,363 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:03:15,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:26 [2020-10-16 00:03:15,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:03:15,999 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 30 treesize of output 25 [2020-10-16 00:03:15,999 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:16,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:16,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:03:16,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:24 [2020-10-16 00:03:16,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:03:16,644 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 30 treesize of output 25 [2020-10-16 00:03:16,644 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:16,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:16,687 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:03:16,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:24 [2020-10-16 00:03:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 00:03:17,385 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 30 treesize of output 25 [2020-10-16 00:03:17,386 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:17,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:17,431 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 00:03:17,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:26 [2020-10-16 00:03:18,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 00:03:18,049 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 00:03:18,052 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 00:03:18,054 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2020-10-16 00:03:18,058 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 00:03:18,067 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 00:03:18,073 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 00:03:18,073 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 23 [2020-10-16 00:03:18,075 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 00:03:18,195 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 21 [2020-10-16 00:03:18,197 INFO L625 ElimStorePlain]: treesize reduction 42, result has 52.8 percent of original size [2020-10-16 00:03:18,200 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 00:03:18,200 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:41 [2020-10-16 00:03:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:03:18,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 00:03:18,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 50 [2020-10-16 00:03:18,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092043943] [2020-10-16 00:03:18,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-16 00:03:18,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:03:18,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-16 00:03:18,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2504, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 00:03:18,452 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 00:03:18,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 140 transitions, 1628 flow. Second operand 52 states. [2020-10-16 00:03:18,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:03:18,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 00:03:18,455 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:03:21,742 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-10-16 00:03:22,412 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-16 00:03:23,895 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-16 00:03:24,525 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-16 00:03:25,930 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-16 00:03:26,552 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-10-16 00:03:27,942 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-10-16 00:03:28,547 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-16 00:03:32,448 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-10-16 00:03:33,155 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-16 00:03:33,705 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-16 00:03:33,982 INFO L129 PetriNetUnfolder]: 299/918 cut-off events. [2020-10-16 00:03:33,983 INFO L130 PetriNetUnfolder]: For 3664/3664 co-relation queries the response was YES. [2020-10-16 00:03:33,989 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 918 events. 299/918 cut-off events. For 3664/3664 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4661 event pairs, 15 based on Foata normal form. 6/912 useless extension candidates. Maximal degree in co-relation 4230. Up to 125 conditions per place. [2020-10-16 00:03:33,990 INFO L132 encePairwiseOnDemand]: 251/265 looper letters, 0 selfloop transitions, 0 changer transitions 251/251 dead transitions. [2020-10-16 00:03:33,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 251 transitions, 2415 flow [2020-10-16 00:03:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 00:03:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 00:03:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4739 transitions. [2020-10-16 00:03:33,998 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4833248342682305 [2020-10-16 00:03:33,999 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4739 transitions. [2020-10-16 00:03:33,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4739 transitions. [2020-10-16 00:03:34,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:03:34,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4739 transitions. [2020-10-16 00:03:34,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-16 00:03:34,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-16 00:03:34,008 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-16 00:03:34,009 INFO L185 Difference]: Start difference. First operand has 382 places, 140 transitions, 1628 flow. Second operand 37 states and 4739 transitions. [2020-10-16 00:03:34,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 251 transitions, 2415 flow [2020-10-16 00:03:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 251 transitions, 1604 flow, removed 143 selfloop flow, removed 118 redundant places. [2020-10-16 00:03:34,026 INFO L241 Difference]: Finished difference. Result has 181 places, 0 transitions, 0 flow [2020-10-16 00:03:34,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=0, PETRI_PLACES=181, PETRI_TRANSITIONS=0} [2020-10-16 00:03:34,026 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 146 predicate places. [2020-10-16 00:03:34,026 INFO L481 AbstractCegarLoop]: Abstraction has has 181 places, 0 transitions, 0 flow [2020-10-16 00:03:34,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-16 00:03:34,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 00:03:34,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:03:34 BasicIcfg [2020-10-16 00:03:34,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:03:34,234 INFO L168 Benchmark]: Toolchain (without parser) took 264675.22 ms. Allocated memory was 249.6 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 204.6 MB in the beginning and 813.7 MB in the end (delta: -609.1 MB). Peak memory consumption was 523.9 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,235 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:03:34,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.66 ms. Allocated memory was 249.6 MB in the beginning and 310.4 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 238.3 MB in the end (delta: -33.6 MB). Peak memory consumption was 37.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.36 ms. Allocated memory is still 310.4 MB. Free memory was 238.3 MB in the beginning and 235.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,236 INFO L168 Benchmark]: Boogie Preprocessor took 35.35 ms. Allocated memory is still 310.4 MB. Free memory was 235.7 MB in the beginning and 233.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,236 INFO L168 Benchmark]: RCFGBuilder took 565.68 ms. Allocated memory is still 310.4 MB. Free memory was 233.2 MB in the beginning and 198.8 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,237 INFO L168 Benchmark]: TraceAbstraction took 263146.57 ms. Allocated memory was 310.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 198.8 MB in the beginning and 813.7 MB in the end (delta: -615.0 MB). Peak memory consumption was 457.2 MB. Max. memory is 14.2 GB. [2020-10-16 00:03:34,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 854.66 ms. Allocated memory was 249.6 MB in the beginning and 310.4 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 238.3 MB in the end (delta: -33.6 MB). Peak memory consumption was 37.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 67.36 ms. Allocated memory is still 310.4 MB. Free memory was 238.3 MB in the beginning and 235.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 35.35 ms. Allocated memory is still 310.4 MB. Free memory was 235.7 MB in the beginning and 233.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 565.68 ms. Allocated memory is still 310.4 MB. Free memory was 233.2 MB in the beginning and 198.8 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 263146.57 ms. Allocated memory was 310.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 198.8 MB in the beginning and 813.7 MB in the end (delta: -615.0 MB). Peak memory consumption was 457.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4253 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 64 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 340 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 126 PlacesBefore, 35 PlacesAfterwards, 130 TransitionsBefore, 34 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 123 TotalNumberOfCompositions, 9738 MoverChecksTotal - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 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: 262.9s, OverallIterations: 25, TraceHistogramMax: 6, AutomataDifference: 211.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 241 SDtfs, 3285 SDslu, 1849 SDs, 0 SdLazy, 26479 SolverSat, 1420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1652 GetRequests, 768 SyntacticMatches, 23 SemanticMatches, 861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18456 ImplicationChecksByTransitivity, 171.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6594occurred in iteration=21, 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: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 39.9s InterpolantComputationTime, 1712 NumberOfCodeBlocks, 1681 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1667 ConstructedInterpolants, 83 QuantifiedInterpolants, 1418143 SizeOfPredicates, 358 NumberOfNonLiveVariables, 5681 ConjunctsInSsa, 705 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 410/1782 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...