/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:16:20,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:16:20,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:16:20,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:16:20,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:16:20,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:16:20,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:16:20,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:16:20,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:16:20,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:16:20,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:16:20,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:16:20,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:16:20,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:16:20,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:16:20,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:16:20,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:16:20,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:16:20,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:16:20,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:16:20,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:16:20,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:16:20,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:16:20,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:16:20,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:16:20,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:16:20,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:16:20,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:16:20,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:16:20,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:16:20,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:16:20,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:16:20,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:16:20,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:16:20,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:16:20,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:16:20,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:16:20,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:16:20,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:16:20,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:16:20,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:16:20,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 14:16:20,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:16:20,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:16:20,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:16:20,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:16:20,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:16:20,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:16:20,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:16:20,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:16:20,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:16:20,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:16:20,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:16:20,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:16:20,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:16:20,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:16:20,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:16:20,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:16:20,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:16:20,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:16:20,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:16:20,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:16:20,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:16:20,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:16:20,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:16:20,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:16:20,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:16:20,351 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:16:20,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:16:20,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:16:20,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:16:20,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:16:20,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:16:20,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:16:20,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:16:20,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:16:20,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:16:20,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-09 14:16:20,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae64890e/968fdbef55c943eca88afeb2334318af/FLAGcb13ac211 [2020-10-09 14:16:21,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:16:21,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-09 14:16:21,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae64890e/968fdbef55c943eca88afeb2334318af/FLAGcb13ac211 [2020-10-09 14:16:21,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae64890e/968fdbef55c943eca88afeb2334318af [2020-10-09 14:16:21,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:16:21,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:16:21,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:16:21,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:16:21,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:16:21,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:16:21" (1/1) ... [2020-10-09 14:16:21,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c868897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:21, skipping insertion in model container [2020-10-09 14:16:21,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:16:21" (1/1) ... [2020-10-09 14:16:21,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:16:21,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:16:22,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:16:22,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:16:22,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:16:22,262 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:16:22,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22 WrapperNode [2020-10-09 14:16:22,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:16:22,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:16:22,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:16:22,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:16:22,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:16:22,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:16:22,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:16:22,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:16:22,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (1/1) ... [2020-10-09 14:16:22,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:16:22,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:16:22,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:16:22,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:16:22,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (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 [2020-10-09 14:16:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-09 14:16:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-09 14:16:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-09 14:16:22,428 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-09 14:16:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:16:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 14:16:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:16:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:16:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 14:16:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:16:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:16:22,438 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:16:22,746 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:16:22,747 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:16:22,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:16:22 BoogieIcfgContainer [2020-10-09 14:16:22,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:16:22,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:16:22,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:16:22,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:16:22,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:16:21" (1/3) ... [2020-10-09 14:16:22,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c22580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:16:22, skipping insertion in model container [2020-10-09 14:16:22,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:16:22" (2/3) ... [2020-10-09 14:16:22,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c22580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:16:22, skipping insertion in model container [2020-10-09 14:16:22,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:16:22" (3/3) ... [2020-10-09 14:16:22,758 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-09 14:16:22,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:16:22,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:16:22,779 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:16:22,823 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,824 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,824 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,824 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,825 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,825 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,826 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,826 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,826 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,826 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,827 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,827 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,827 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,828 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,828 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,829 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,829 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,831 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,831 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,832 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,832 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,832 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,832 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,833 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,836 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,837 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,837 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,837 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,837 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,838 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,843 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:16:22,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:16:22,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:16:22,882 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:16:22,882 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:16:22,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:16:22,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:16:22,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:16:22,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:16:22,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:16:22,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-09 14:16:22,932 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-09 14:16:22,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:16:22,938 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-09 14:16:22,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 57 transitions, 124 flow [2020-10-09 14:16:22,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 116 flow [2020-10-09 14:16:22,962 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2020-10-09 14:16:22,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:16:22,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:16:22,964 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, 1] [2020-10-09 14:16:22,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:16:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:16:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash 627590565, now seen corresponding path program 1 times [2020-10-09 14:16:22,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:16:22,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694542522] [2020-10-09 14:16:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 14:16:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:23,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 14:16:23,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:23,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:23,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:23,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:23,288 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:23,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694542522] [2020-10-09 14:16:23,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:16:23,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-09 14:16:23,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797352340] [2020-10-09 14:16:23,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:16:23,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:16:23,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:16:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:16:23,535 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:16:23,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 116 flow. Second operand 9 states. [2020-10-09 14:16:23,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:16:23,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:16:23,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:16:24,074 INFO L129 PetriNetUnfolder]: 84/383 cut-off events. [2020-10-09 14:16:24,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:16:24,082 INFO L80 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 383 events. 84/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2260 event pairs, 0 based on Foata normal form. 91/435 useless extension candidates. Maximal degree in co-relation 501. Up to 47 conditions per place. [2020-10-09 14:16:24,089 INFO L132 encePairwiseOnDemand]: 46/57 looper letters, 16 selfloop transitions, 23 changer transitions 43/118 dead transitions. [2020-10-09 14:16:24,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 392 flow [2020-10-09 14:16:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 14:16:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-09 14:16:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1119 transitions. [2020-10-09 14:16:24,120 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8923444976076556 [2020-10-09 14:16:24,121 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1119 transitions. [2020-10-09 14:16:24,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1119 transitions. [2020-10-09 14:16:24,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:16:24,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1119 transitions. [2020-10-09 14:16:24,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-09 14:16:24,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-09 14:16:24,153 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-09 14:16:24,156 INFO L185 Difference]: Start difference. First operand has 57 places, 55 transitions, 116 flow. Second operand 22 states and 1119 transitions. [2020-10-09 14:16:24,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 392 flow [2020-10-09 14:16:24,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:16:24,177 INFO L241 Difference]: Finished difference. Result has 94 places, 69 transitions, 266 flow [2020-10-09 14:16:24,188 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=266, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2020-10-09 14:16:24,189 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2020-10-09 14:16:24,190 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 266 flow [2020-10-09 14:16:24,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:16:24,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:16:24,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:16:24,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:16:24,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:16:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:16:24,406 INFO L82 PathProgramCache]: Analyzing trace with hash -933138607, now seen corresponding path program 1 times [2020-10-09 14:16:24,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:16:24,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622781404] [2020-10-09 14:16:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 14:16:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:24,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:16:24,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:24,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:24,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:24,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:24,663 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:24,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:24,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622781404] [2020-10-09 14:16:24,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:16:24,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2020-10-09 14:16:24,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492046245] [2020-10-09 14:16:24,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:16:24,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:16:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:16:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:16:25,029 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:16:25,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 266 flow. Second operand 13 states. [2020-10-09 14:16:25,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:16:25,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:16:25,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:16:25,883 INFO L129 PetriNetUnfolder]: 91/448 cut-off events. [2020-10-09 14:16:25,884 INFO L130 PetriNetUnfolder]: For 1129/1137 co-relation queries the response was YES. [2020-10-09 14:16:25,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 448 events. 91/448 cut-off events. For 1129/1137 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2615 event pairs, 0 based on Foata normal form. 22/419 useless extension candidates. Maximal degree in co-relation 894. Up to 81 conditions per place. [2020-10-09 14:16:25,893 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 21 selfloop transitions, 56 changer transitions 37/150 dead transitions. [2020-10-09 14:16:25,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 150 transitions, 978 flow [2020-10-09 14:16:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 14:16:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-09 14:16:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1679 transitions. [2020-10-09 14:16:25,901 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8416040100250627 [2020-10-09 14:16:25,901 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1679 transitions. [2020-10-09 14:16:25,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1679 transitions. [2020-10-09 14:16:25,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:16:25,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1679 transitions. [2020-10-09 14:16:25,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 36 states. [2020-10-09 14:16:25,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 36 states. [2020-10-09 14:16:25,912 INFO L81 ComplementDD]: Finished complementDD. Result 36 states. [2020-10-09 14:16:25,912 INFO L185 Difference]: Start difference. First operand has 94 places, 69 transitions, 266 flow. Second operand 35 states and 1679 transitions. [2020-10-09 14:16:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 150 transitions, 978 flow [2020-10-09 14:16:25,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 924 flow, removed 27 selfloop flow, removed 9 redundant places. [2020-10-09 14:16:25,929 INFO L241 Difference]: Finished difference. Result has 123 places, 107 transitions, 643 flow [2020-10-09 14:16:25,930 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=643, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2020-10-09 14:16:25,931 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2020-10-09 14:16:25,931 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 643 flow [2020-10-09 14:16:25,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:16:25,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:16:25,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:16:26,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:16:26,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:16:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:16:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash -979469551, now seen corresponding path program 2 times [2020-10-09 14:16:26,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:16:26,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837699910] [2020-10-09 14:16:26,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 14:16:26,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 14:16:26,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:16:26,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:16:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:26,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:16:26,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:26,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:26,293 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:26,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:26,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:26,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837699910] [2020-10-09 14:16:26,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:16:26,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2020-10-09 14:16:26,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887557989] [2020-10-09 14:16:26,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:16:26,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:16:26,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:16:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:16:26,461 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:16:26,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 643 flow. Second operand 13 states. [2020-10-09 14:16:26,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:16:26,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:16:26,463 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:16:27,939 INFO L129 PetriNetUnfolder]: 196/1097 cut-off events. [2020-10-09 14:16:27,940 INFO L130 PetriNetUnfolder]: For 6279/6287 co-relation queries the response was YES. [2020-10-09 14:16:27,951 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 1097 events. 196/1097 cut-off events. For 6279/6287 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8778 event pairs, 0 based on Foata normal form. 35/1015 useless extension candidates. Maximal degree in co-relation 2605. Up to 207 conditions per place. [2020-10-09 14:16:27,958 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 24 selfloop transitions, 160 changer transitions 60/280 dead transitions. [2020-10-09 14:16:27,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 280 transitions, 2673 flow [2020-10-09 14:16:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-09 14:16:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-09 14:16:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2450 transitions. [2020-10-09 14:16:27,967 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8427932576539388 [2020-10-09 14:16:27,967 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2450 transitions. [2020-10-09 14:16:27,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2450 transitions. [2020-10-09 14:16:27,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:16:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2450 transitions. [2020-10-09 14:16:27,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 52 states. [2020-10-09 14:16:27,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 52 states. [2020-10-09 14:16:27,985 INFO L81 ComplementDD]: Finished complementDD. Result 52 states. [2020-10-09 14:16:27,985 INFO L185 Difference]: Start difference. First operand has 123 places, 107 transitions, 643 flow. Second operand 51 states and 2450 transitions. [2020-10-09 14:16:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 280 transitions, 2673 flow [2020-10-09 14:16:28,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 280 transitions, 2477 flow, removed 74 selfloop flow, removed 20 redundant places. [2020-10-09 14:16:28,021 INFO L241 Difference]: Finished difference. Result has 172 places, 216 transitions, 1814 flow [2020-10-09 14:16:28,021 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1814, PETRI_PLACES=172, PETRI_TRANSITIONS=216} [2020-10-09 14:16:28,022 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 115 predicate places. [2020-10-09 14:16:28,022 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 216 transitions, 1814 flow [2020-10-09 14:16:28,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:16:28,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:16:28,022 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:16:28,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 14:16:28,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:16:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:16:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash 363117953, now seen corresponding path program 1 times [2020-10-09 14:16:28,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:16:28,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590767828] [2020-10-09 14:16:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 14:16:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 14:16:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:28,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:28,508 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:28,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:28,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:28,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:28,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:28,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:28,708 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:28,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590767828] [2020-10-09 14:16:28,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2041854858] [2020-10-09 14:16:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:16:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:28,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 14:16:28,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:28,963 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:28,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:29,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:29,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,014 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,021 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,026 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:29,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808729176] [2020-10-09 14:16:29,101 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 [2020-10-09 14:16:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:29,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 14:16:29,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:29,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:29,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:29,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:29,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,218 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,221 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,227 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:29,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:16:29,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 17 [2020-10-09 14:16:29,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193667433] [2020-10-09 14:16:29,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:16:29,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:16:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:16:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:16:29,654 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:16:29,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 216 transitions, 1814 flow. Second operand 17 states. [2020-10-09 14:16:29,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:16:29,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:16:29,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:16:33,291 INFO L129 PetriNetUnfolder]: 365/2198 cut-off events. [2020-10-09 14:16:33,291 INFO L130 PetriNetUnfolder]: For 22815/22856 co-relation queries the response was YES. [2020-10-09 14:16:33,314 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 2198 events. 365/2198 cut-off events. For 22815/22856 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 19482 event pairs, 0 based on Foata normal form. 56/2021 useless extension candidates. Maximal degree in co-relation 6003. Up to 402 conditions per place. [2020-10-09 14:16:33,326 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 30 selfloop transitions, 401 changer transitions 77/544 dead transitions. [2020-10-09 14:16:33,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 544 transitions, 6618 flow [2020-10-09 14:16:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-09 14:16:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-09 14:16:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 3451 transitions. [2020-10-09 14:16:33,335 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8408869395711501 [2020-10-09 14:16:33,335 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 3451 transitions. [2020-10-09 14:16:33,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 3451 transitions. [2020-10-09 14:16:33,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:16:33,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 3451 transitions. [2020-10-09 14:16:33,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 73 states. [2020-10-09 14:16:33,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 73 states. [2020-10-09 14:16:33,348 INFO L81 ComplementDD]: Finished complementDD. Result 73 states. [2020-10-09 14:16:33,348 INFO L185 Difference]: Start difference. First operand has 172 places, 216 transitions, 1814 flow. Second operand 72 states and 3451 transitions. [2020-10-09 14:16:33,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 544 transitions, 6618 flow [2020-10-09 14:16:33,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 544 transitions, 5666 flow, removed 455 selfloop flow, removed 27 redundant places. [2020-10-09 14:16:33,432 INFO L241 Difference]: Finished difference. Result has 236 places, 463 transitions, 4606 flow [2020-10-09 14:16:33,433 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=4606, PETRI_PLACES=236, PETRI_TRANSITIONS=463} [2020-10-09 14:16:33,433 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 179 predicate places. [2020-10-09 14:16:33,433 INFO L481 AbstractCegarLoop]: Abstraction has has 236 places, 463 transitions, 4606 flow [2020-10-09 14:16:33,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:16:33,434 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:16:33,434 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:16:34,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:16:34,046 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:16:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:16:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1061462731, now seen corresponding path program 1 times [2020-10-09 14:16:34,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:16:34,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474098291] [2020-10-09 14:16:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 14:16:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-09 14:16:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:34,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:34,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:34,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:34,330 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:34,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:34,382 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:34,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:34,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:34,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:38,774 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-09 14:16:39,225 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,374 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 40 [2020-10-09 14:16:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474098291] [2020-10-09 14:16:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1969343197] [2020-10-09 14:16:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:16:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:41,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-09 14:16:41,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:41,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:41,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:41,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:41,607 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,609 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:41,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:42,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472067085] [2020-10-09 14:16:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-09 14:16:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:16:42,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-09 14:16:42,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:16:42,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:42,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:16:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:42,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:16:42,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,487 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,490 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,492 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,495 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:42,498 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:45,608 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-09 14:16:45,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:16:50,337 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-09 14:16:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:16:50,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:16:50,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 23 [2020-10-09 14:16:50,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691819445] [2020-10-09 14:16:50,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:16:50,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:16:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:16:50,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=385, Unknown=5, NotChecked=0, Total=506 [2020-10-09 14:16:53,120 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:16:53,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 463 transitions, 4606 flow. Second operand 23 states. [2020-10-09 14:16:53,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:16:53,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:16:53,121 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:16:57,600 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-09 14:17:00,170 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-10-09 14:17:02,730 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-10-09 14:17:04,041 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-10-09 14:17:21,682 WARN L193 SmtUtils]: Spent 10.40 s on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2020-10-09 14:17:39,363 WARN L193 SmtUtils]: Spent 13.39 s on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-09 14:17:45,363 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 92 DAG size of output: 16 [2020-10-09 14:17:48,589 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-10-09 14:18:04,102 WARN L193 SmtUtils]: Spent 10.92 s on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-09 14:18:11,008 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-10-09 14:18:18,144 WARN L193 SmtUtils]: Spent 5.91 s on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2020-10-09 14:18:36,988 WARN L193 SmtUtils]: Spent 11.46 s on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-09 14:18:44,702 WARN L193 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-09 14:18:58,022 WARN L193 SmtUtils]: Spent 6.18 s on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-09 14:19:05,338 WARN L193 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-09 14:19:13,136 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-09 14:19:18,671 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-09 14:19:36,709 WARN L193 SmtUtils]: Spent 13.32 s on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-09 14:19:41,718 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-10-09 14:19:49,103 WARN L193 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-09 14:19:59,657 WARN L193 SmtUtils]: Spent 10.11 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-09 14:20:19,098 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-09 14:20:28,777 WARN L193 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 59 [2020-10-09 14:20:36,187 INFO L129 PetriNetUnfolder]: 713/4380 cut-off events. [2020-10-09 14:20:36,187 INFO L130 PetriNetUnfolder]: For 65643/65837 co-relation queries the response was YES. [2020-10-09 14:20:36,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12415 conditions, 4380 events. 713/4380 cut-off events. For 65643/65837 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 44219 event pairs, 0 based on Foata normal form. 95/4000 useless extension candidates. Maximal degree in co-relation 12320. Up to 732 conditions per place. [2020-10-09 14:20:36,253 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 60 selfloop transitions, 895 changer transitions 106/1097 dead transitions. [2020-10-09 14:20:36,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1097 transitions, 14179 flow [2020-10-09 14:20:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-09 14:20:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 14:20:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 4841 transitions. [2020-10-09 14:20:36,265 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.840889352093104 [2020-10-09 14:20:36,265 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 4841 transitions. [2020-10-09 14:20:36,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 4841 transitions. [2020-10-09 14:20:36,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:20:36,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 4841 transitions. [2020-10-09 14:20:36,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 102 states. [2020-10-09 14:20:36,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 102 states. [2020-10-09 14:20:36,285 INFO L81 ComplementDD]: Finished complementDD. Result 102 states. [2020-10-09 14:20:36,285 INFO L185 Difference]: Start difference. First operand has 236 places, 463 transitions, 4606 flow. Second operand 101 states and 4841 transitions. [2020-10-09 14:20:36,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1097 transitions, 14179 flow [2020-10-09 14:20:36,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1097 transitions, 13501 flow, removed 285 selfloop flow, removed 36 redundant places. [2020-10-09 14:20:36,483 INFO L241 Difference]: Finished difference. Result has 333 places, 984 transitions, 11439 flow [2020-10-09 14:20:36,483 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=11439, PETRI_PLACES=333, PETRI_TRANSITIONS=984} [2020-10-09 14:20:36,484 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 276 predicate places. [2020-10-09 14:20:36,484 INFO L481 AbstractCegarLoop]: Abstraction has has 333 places, 984 transitions, 11439 flow [2020-10-09 14:20:36,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:20:36,484 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:20:36,484 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:20:37,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:20:37,088 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:20:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:20:37,089 INFO L82 PathProgramCache]: Analyzing trace with hash -129304996, now seen corresponding path program 2 times [2020-10-09 14:20:37,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:20:37,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358657882] [2020-10-09 14:20:37,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-09 14:20:37,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:20:37,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:20:37,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:20:37,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:20:37,424 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:37,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:37,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:20:37,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:37,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:37,804 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:37,861 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:37,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:38,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:38,091 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,345 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-09 14:20:40,494 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358657882] [2020-10-09 14:20:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2094036844] [2020-10-09 14:20:40,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:20:40,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:20:40,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:20:40,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:20:40,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:20:40,807 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:40,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:40,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:20:40,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,868 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,871 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,874 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,877 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:40,880 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:41,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470627930] [2020-10-09 14:20:41,185 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 [2020-10-09 14:20:41,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:20:41,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:20:41,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:20:41,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:20:41,264 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:41,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:20:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:41,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:20:41,326 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,329 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,332 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,340 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,341 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,781 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:20:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:20:41,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:20:41,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 23 [2020-10-09 14:20:41,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500659748] [2020-10-09 14:20:41,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:20:41,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:20:41,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:20:41,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:20:42,998 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:20:42,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 984 transitions, 11439 flow. Second operand 23 states. [2020-10-09 14:20:42,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:20:42,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:20:42,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:20:50,312 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-10-09 14:20:52,764 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-09 14:21:02,478 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-09 14:21:04,808 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-10-09 14:21:06,495 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-10-09 14:21:14,614 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-09 14:21:17,282 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-09 14:21:21,927 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-09 14:21:35,441 INFO L129 PetriNetUnfolder]: 1082/6924 cut-off events. [2020-10-09 14:21:35,441 INFO L130 PetriNetUnfolder]: For 141208/141493 co-relation queries the response was YES. [2020-10-09 14:21:35,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20796 conditions, 6924 events. 1082/6924 cut-off events. For 141208/141493 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 78634 event pairs, 0 based on Foata normal form. 122/6297 useless extension candidates. Maximal degree in co-relation 20667. Up to 876 conditions per place. [2020-10-09 14:21:35,542 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 240 selfloop transitions, 1379 changer transitions 91/1746 dead transitions. [2020-10-09 14:21:35,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 1746 transitions, 24669 flow [2020-10-09 14:21:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-09 14:21:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-09 14:21:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 5019 transitions. [2020-10-09 14:21:35,551 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8385964912280702 [2020-10-09 14:21:35,551 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 5019 transitions. [2020-10-09 14:21:35,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 5019 transitions. [2020-10-09 14:21:35,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:21:35,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 5019 transitions. [2020-10-09 14:21:35,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 106 states. [2020-10-09 14:21:35,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 106 states. [2020-10-09 14:21:35,568 INFO L81 ComplementDD]: Finished complementDD. Result 106 states. [2020-10-09 14:21:35,568 INFO L185 Difference]: Start difference. First operand has 333 places, 984 transitions, 11439 flow. Second operand 105 states and 5019 transitions. [2020-10-09 14:21:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 1746 transitions, 24669 flow [2020-10-09 14:21:36,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1746 transitions, 24252 flow, removed 183 selfloop flow, removed 39 redundant places. [2020-10-09 14:21:36,367 INFO L241 Difference]: Finished difference. Result has 418 places, 1630 transitions, 22457 flow [2020-10-09 14:21:36,369 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=11224, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=833, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=22457, PETRI_PLACES=418, PETRI_TRANSITIONS=1630} [2020-10-09 14:21:36,369 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 361 predicate places. [2020-10-09 14:21:36,369 INFO L481 AbstractCegarLoop]: Abstraction has has 418 places, 1630 transitions, 22457 flow [2020-10-09 14:21:36,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:21:36,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:21:36,370 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:21:36,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-10-09 14:21:36,973 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:21:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:21:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash -928221175, now seen corresponding path program 3 times [2020-10-09 14:21:36,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:21:36,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901274530] [2020-10-09 14:21:36,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-09 14:21:37,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-09 14:21:37,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:21:37,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:21:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:21:45,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:21:45,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:21:49,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:21:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:21:51,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:21:51,992 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:21:52,995 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:21:53,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:21:54,625 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:21:54,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:05,261 WARN L193 SmtUtils]: Spent 10.16 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-09 14:22:05,281 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:13,672 WARN L193 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-09 14:22:13,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:20,302 WARN L193 SmtUtils]: Spent 6.34 s on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-10-09 14:22:20,317 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:26,628 WARN L193 SmtUtils]: Spent 6.15 s on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-09 14:22:26,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:22:27,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901274530] [2020-10-09 14:22:27,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1311726710] [2020-10-09 14:22:27,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:22:27,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-09 14:22:27,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:22:27,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 14:22:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:22:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:22:35,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:22:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-09 14:22:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:22:46,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [14, 14] total 36 [2020-10-09 14:22:46,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617716] [2020-10-09 14:22:46,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:22:46,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:22:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:22:46,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1071, Unknown=7, NotChecked=0, Total=1260 [2020-10-09 14:22:46,100 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 57 [2020-10-09 14:22:46,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1630 transitions, 22457 flow. Second operand 13 states. [2020-10-09 14:22:46,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:22:46,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 57 [2020-10-09 14:22:46,101 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:22:50,479 INFO L129 PetriNetUnfolder]: 1058/6633 cut-off events. [2020-10-09 14:22:50,480 INFO L130 PetriNetUnfolder]: For 131274/131440 co-relation queries the response was YES. [2020-10-09 14:22:50,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 6633 events. 1058/6633 cut-off events. For 131274/131440 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 80114 event pairs, 0 based on Foata normal form. 2/5986 useless extension candidates. Maximal degree in co-relation 21253. Up to 851 conditions per place. [2020-10-09 14:22:50,591 INFO L132 encePairwiseOnDemand]: 51/57 looper letters, 8 selfloop transitions, 21 changer transitions 0/1251 dead transitions. [2020-10-09 14:22:50,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1251 transitions, 16463 flow [2020-10-09 14:22:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 14:22:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-09 14:22:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 858 transitions. [2020-10-09 14:22:50,596 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8362573099415205 [2020-10-09 14:22:50,596 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 858 transitions. [2020-10-09 14:22:50,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 858 transitions. [2020-10-09 14:22:50,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:22:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 858 transitions. [2020-10-09 14:22:50,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 19 states. [2020-10-09 14:22:50,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 19 states. [2020-10-09 14:22:50,600 INFO L81 ComplementDD]: Finished complementDD. Result 19 states. [2020-10-09 14:22:50,600 INFO L185 Difference]: Start difference. First operand has 418 places, 1630 transitions, 22457 flow. Second operand 18 states and 858 transitions. [2020-10-09 14:22:50,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1251 transitions, 16463 flow [2020-10-09 14:22:51,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1251 transitions, 15985 flow, removed 147 selfloop flow, removed 62 redundant places. [2020-10-09 14:22:51,643 INFO L241 Difference]: Finished difference. Result has 342 places, 1247 transitions, 15971 flow [2020-10-09 14:22:51,645 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=15885, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15971, PETRI_PLACES=342, PETRI_TRANSITIONS=1247} [2020-10-09 14:22:51,645 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 285 predicate places. [2020-10-09 14:22:51,645 INFO L481 AbstractCegarLoop]: Abstraction has has 342 places, 1247 transitions, 15971 flow [2020-10-09 14:22:51,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:22:51,645 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:22:51,646 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:22:52,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:22:52,047 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:22:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:22:52,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2061701555, now seen corresponding path program 4 times [2020-10-09 14:22:52,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:22:52,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569295017] [2020-10-09 14:22:52,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-09 14:22:52,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:22:52,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:22:52,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 14:22:52,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:22:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:22:52,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:22:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:22:52,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569295017] [2020-10-09 14:22:52,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:22:52,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 13 [2020-10-09 14:22:52,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492050043] [2020-10-09 14:22:52,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:22:52,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:22:52,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:22:52,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:22:52,706 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 57 [2020-10-09 14:22:52,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1247 transitions, 15971 flow. Second operand 13 states. [2020-10-09 14:22:52,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:22:52,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 57 [2020-10-09 14:22:52,708 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:22:54,818 INFO L129 PetriNetUnfolder]: 914/6690 cut-off events. [2020-10-09 14:22:54,819 INFO L130 PetriNetUnfolder]: For 33727/33851 co-relation queries the response was YES. [2020-10-09 14:22:54,908 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 6690 events. 914/6690 cut-off events. For 33727/33851 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 85219 event pairs, 0 based on Foata normal form. 2/6442 useless extension candidates. Maximal degree in co-relation 19936. Up to 804 conditions per place. [2020-10-09 14:22:54,934 INFO L132 encePairwiseOnDemand]: 51/57 looper letters, 8 selfloop transitions, 21 changer transitions 48/1123 dead transitions. [2020-10-09 14:22:54,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1123 transitions, 14362 flow [2020-10-09 14:22:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 14:22:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-09 14:22:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 858 transitions. [2020-10-09 14:22:54,938 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8362573099415205 [2020-10-09 14:22:54,939 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 858 transitions. [2020-10-09 14:22:54,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 858 transitions. [2020-10-09 14:22:54,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:22:54,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 858 transitions. [2020-10-09 14:22:54,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 19 states. [2020-10-09 14:22:54,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 19 states. [2020-10-09 14:22:54,950 INFO L81 ComplementDD]: Finished complementDD. Result 19 states. [2020-10-09 14:22:54,950 INFO L185 Difference]: Start difference. First operand has 342 places, 1247 transitions, 15971 flow. Second operand 18 states and 858 transitions. [2020-10-09 14:22:54,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1123 transitions, 14362 flow [2020-10-09 14:22:55,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 1123 transitions, 14211 flow, removed 31 selfloop flow, removed 17 redundant places. [2020-10-09 14:22:55,667 INFO L241 Difference]: Finished difference. Result has 332 places, 1071 transitions, 13563 flow [2020-10-09 14:22:55,668 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=14111, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1097, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13563, PETRI_PLACES=332, PETRI_TRANSITIONS=1071} [2020-10-09 14:22:55,668 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 275 predicate places. [2020-10-09 14:22:55,668 INFO L481 AbstractCegarLoop]: Abstraction has has 332 places, 1071 transitions, 13563 flow [2020-10-09 14:22:55,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:22:55,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:22:55,669 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:22:55,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-09 14:22:55,890 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:22:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:22:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1197995713, now seen corresponding path program 5 times [2020-10-09 14:22:55,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:22:55,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087714863] [2020-10-09 14:22:55,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-09 14:22:55,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-09 14:22:55,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:22:55,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:22:55,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:22:58,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:22:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:22:58,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:22:58,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:58,903 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:22:58,979 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:01,050 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:01,169 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:07,164 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:07,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:11,270 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:15,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:23:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087714863] [2020-10-09 14:23:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1690764729] [2020-10-09 14:23:19,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:23:19,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-09 14:23:19,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:23:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:23:19,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:23:21,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:23:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:23:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:23:21,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:21,544 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:21,546 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:21,548 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:21,551 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:25,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:25,778 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:25,980 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:26,051 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:23:28,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585981290] [2020-10-09 14:23:28,685 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 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 [2020-10-09 14:23:28,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-09 14:23:28,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:23:28,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:23:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:23:30,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:23:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:23:30,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:23:30,907 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:30,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:30,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:30,915 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:30,918 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:33,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:33,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:33,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:33,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:23:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:23:42,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:23:42,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 25 [2020-10-09 14:23:42,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480142815] [2020-10-09 14:23:42,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-09 14:23:42,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:23:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-09 14:23:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=449, Unknown=7, NotChecked=0, Total=600 [2020-10-09 14:23:51,929 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:23:51,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 1071 transitions, 13563 flow. Second operand 25 states. [2020-10-09 14:23:51,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:23:51,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:23:51,930 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:23:54,226 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-09 14:24:09,317 WARN L193 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-09 14:24:28,266 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2020-10-09 14:24:34,480 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-09 14:24:51,903 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-09 14:25:00,385 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-09 14:25:00,659 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-09 14:25:24,456 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-09 14:25:28,687 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-09 14:25:45,373 WARN L193 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-09 14:25:55,937 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-09 14:26:00,849 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-09 14:26:05,561 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-10-09 14:26:15,142 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 14:26:32,877 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-09 14:26:42,783 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-09 14:26:54,709 WARN L193 SmtUtils]: Spent 9.42 s on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-09 14:27:01,425 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-09 14:27:18,718 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-09 14:27:40,053 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 37 [2020-10-09 14:27:46,605 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-09 14:28:09,204 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-09 14:28:13,300 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-09 14:28:20,343 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-09 14:28:21,258 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-09 14:28:21,884 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-09 14:28:24,462 INFO L129 PetriNetUnfolder]: 1130/9115 cut-off events. [2020-10-09 14:28:24,462 INFO L130 PetriNetUnfolder]: For 98038/98365 co-relation queries the response was YES. [2020-10-09 14:28:24,652 INFO L80 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 9115 events. 1130/9115 cut-off events. For 98038/98365 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 125188 event pairs, 2 based on Foata normal form. 40/9147 useless extension candidates. Maximal degree in co-relation 29194. Up to 1591 conditions per place. [2020-10-09 14:28:24,689 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 899 selfloop transitions, 391 changer transitions 88/1448 dead transitions. [2020-10-09 14:28:24,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1448 transitions, 22495 flow [2020-10-09 14:28:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-09 14:28:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-09 14:28:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3027 transitions. [2020-10-09 14:28:24,699 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8297697368421053 [2020-10-09 14:28:24,699 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3027 transitions. [2020-10-09 14:28:24,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3027 transitions. [2020-10-09 14:28:24,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:28:24,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3027 transitions. [2020-10-09 14:28:24,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 65 states. [2020-10-09 14:28:24,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 65 states. [2020-10-09 14:28:24,709 INFO L81 ComplementDD]: Finished complementDD. Result 65 states. [2020-10-09 14:28:24,709 INFO L185 Difference]: Start difference. First operand has 332 places, 1071 transitions, 13563 flow. Second operand 64 states and 3027 transitions. [2020-10-09 14:28:24,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1448 transitions, 22495 flow [2020-10-09 14:28:25,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 1448 transitions, 22423 flow, removed 22 selfloop flow, removed 4 redundant places. [2020-10-09 14:28:25,861 INFO L241 Difference]: Finished difference. Result has 422 places, 1299 transitions, 18704 flow [2020-10-09 14:28:25,862 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=13518, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=18704, PETRI_PLACES=422, PETRI_TRANSITIONS=1299} [2020-10-09 14:28:25,863 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 365 predicate places. [2020-10-09 14:28:25,863 INFO L481 AbstractCegarLoop]: Abstraction has has 422 places, 1299 transitions, 18704 flow [2020-10-09 14:28:25,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-09 14:28:25,863 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:28:25,863 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:28:26,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:28:26,464 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:28:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:28:26,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1942748327, now seen corresponding path program 6 times [2020-10-09 14:28:26,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:28:26,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063835097] [2020-10-09 14:28:26,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-10-09 14:28:26,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-09 14:28:26,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:28:26,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:28:26,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:28:27,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:28:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:27,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:28:27,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,234 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,304 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,479 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,588 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:27,897 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,018 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:28,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063835097] [2020-10-09 14:28:28,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625488671] [2020-10-09 14:28:28,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:28:28,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-09 14:28:28,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:28:28,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:28:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:28:28,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:28:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:28,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:28:28,346 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,349 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,351 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,356 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,358 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,361 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,364 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,366 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:28,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143768614] [2020-10-09 14:28:28,544 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:28:28,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-09 14:28:28,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:28:28,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:28:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:28:28,606 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:28:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:28,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:28:28,622 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,624 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,626 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,635 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,638 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,640 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,643 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:28:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:28:28,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:28:28,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 25 [2020-10-09 14:28:28,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066838810] [2020-10-09 14:28:28,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-09 14:28:28,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:28:28,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-09 14:28:28,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-10-09 14:28:30,155 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:28:30,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1299 transitions, 18704 flow. Second operand 25 states. [2020-10-09 14:28:30,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:28:30,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:28:30,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:28:30,986 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-09 14:28:31,400 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-09 14:28:31,891 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-09 14:28:32,231 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-09 14:28:32,607 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-09 14:28:33,754 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-09 14:28:35,024 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-09 14:28:35,391 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-09 14:28:36,790 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-09 14:28:37,787 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-09 14:28:38,537 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-09 14:28:42,477 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-09 14:28:45,290 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-09 14:28:46,414 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-09 14:28:48,235 INFO L129 PetriNetUnfolder]: 1261/10761 cut-off events. [2020-10-09 14:28:48,235 INFO L130 PetriNetUnfolder]: For 129767/130124 co-relation queries the response was YES. [2020-10-09 14:28:48,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35599 conditions, 10761 events. 1261/10761 cut-off events. For 129767/130124 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 154140 event pairs, 2 based on Foata normal form. 48/10803 useless extension candidates. Maximal degree in co-relation 35484. Up to 1608 conditions per place. [2020-10-09 14:28:48,596 INFO L132 encePairwiseOnDemand]: 50/57 looper letters, 859 selfloop transitions, 666 changer transitions 100/1694 dead transitions. [2020-10-09 14:28:48,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1694 transitions, 29549 flow [2020-10-09 14:28:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-09 14:28:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-09 14:28:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 3547 transitions. [2020-10-09 14:28:48,609 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8297076023391813 [2020-10-09 14:28:48,609 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 3547 transitions. [2020-10-09 14:28:48,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 3547 transitions. [2020-10-09 14:28:48,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:28:48,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 3547 transitions. [2020-10-09 14:28:48,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 76 states. [2020-10-09 14:28:48,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 76 states. [2020-10-09 14:28:48,620 INFO L81 ComplementDD]: Finished complementDD. Result 76 states. [2020-10-09 14:28:48,620 INFO L185 Difference]: Start difference. First operand has 422 places, 1299 transitions, 18704 flow. Second operand 75 states and 3547 transitions. [2020-10-09 14:28:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1694 transitions, 29549 flow [2020-10-09 14:28:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1694 transitions, 29057 flow, removed 218 selfloop flow, removed 22 redundant places. [2020-10-09 14:28:50,331 INFO L241 Difference]: Finished difference. Result has 488 places, 1529 transitions, 25128 flow [2020-10-09 14:28:50,333 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=18428, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=25128, PETRI_PLACES=488, PETRI_TRANSITIONS=1529} [2020-10-09 14:28:50,334 INFO L341 CegarLoopForPetriNet]: 57 programPoint places, 431 predicate places. [2020-10-09 14:28:50,334 INFO L481 AbstractCegarLoop]: Abstraction has has 488 places, 1529 transitions, 25128 flow [2020-10-09 14:28:50,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-09 14:28:50,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:28:50,334 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:28:50,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:28:50,954 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:28:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:28:50,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1654098103, now seen corresponding path program 7 times [2020-10-09 14:28:50,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:28:50,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276030888] [2020-10-09 14:28:50,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-10-09 14:28:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:28:51,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:28:51,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:29:07,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:07,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:08,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:29:08,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:29:08,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:08,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:09,146 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:09,275 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:09,455 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:17,813 WARN L193 SmtUtils]: Spent 8.14 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-09 14:29:17,827 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:23,678 WARN L193 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-09 14:29:23,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:27,775 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification that was a NOOP. DAG size: 48 [2020-10-09 14:29:27,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:29,914 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-09 14:29:30,247 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:29:33,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276030888] [2020-10-09 14:29:33,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [468183447] [2020-10-09 14:29:33,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:29:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:29:33,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:29:33,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:29:48,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:48,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:48,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:29:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:29:48,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:29:48,762 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:48,764 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:48,765 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:48,766 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:48,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:49,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:49,645 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:53,429 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:53,845 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:29:58,362 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2020-10-09 14:29:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:29:58,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849958205] [2020-10-09 14:29:58,408 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:29:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:29:58,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:29:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:30:10,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:30:10,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:30:10,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:30:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:30:10,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:30:10,278 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,280 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,281 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,283 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,284 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,548 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:10,563 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:17,406 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-09 14:30:17,411 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:22,926 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:30:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:30:23,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:30:23,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 28 [2020-10-09 14:30:23,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213525046] [2020-10-09 14:30:23,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-09 14:30:23,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:30:23,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-09 14:30:23,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=603, Unknown=13, NotChecked=0, Total=756 [2020-10-09 14:30:29,699 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 57 [2020-10-09 14:30:29,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1529 transitions, 25128 flow. Second operand 28 states. [2020-10-09 14:30:29,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:30:29,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 57 [2020-10-09 14:30:29,701 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:30:32,785 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-09 14:30:38,966 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-09 14:30:45,087 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 29 DAG size of output: 28 Received shutdown request... [2020-10-09 14:30:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 14:30:47,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3,24 cvc4 --incremental --print-success --lang smt --rewrite-divk,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:30:47,042 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 14:30:47,049 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 14:30:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:30:47 BasicIcfg [2020-10-09 14:30:47,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:30:47,052 INFO L168 Benchmark]: Toolchain (without parser) took 865513.42 ms. Allocated memory was 251.7 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 206.8 MB in the beginning and 1.1 GB in the end (delta: -938.6 MB). Peak memory consumption was 380.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:30:47,052 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:30:47,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.18 ms. Allocated memory was 251.7 MB in the beginning and 314.6 MB in the end (delta: 62.9 MB). Free memory was 206.8 MB in the beginning and 270.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:30:47,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.62 ms. Allocated memory is still 314.6 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:30:47,053 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 314.6 MB. Free memory was 270.0 MB in the beginning and 267.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:30:47,054 INFO L168 Benchmark]: RCFGBuilder took 384.49 ms. Allocated memory is still 314.6 MB. Free memory was 267.5 MB in the beginning and 245.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:30:47,054 INFO L168 Benchmark]: TraceAbstraction took 864299.42 ms. Allocated memory was 314.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 245.4 MB in the beginning and 1.1 GB in the end (delta: -900.1 MB). Peak memory consumption was 355.6 MB. Max. memory is 14.2 GB. [2020-10-09 14:30:47,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 724.18 ms. Allocated memory was 251.7 MB in the beginning and 314.6 MB in the end (delta: 62.9 MB). Free memory was 206.8 MB in the beginning and 270.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 72.62 ms. Allocated memory is still 314.6 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 314.6 MB. Free memory was 270.0 MB in the beginning and 267.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 384.49 ms. Allocated memory is still 314.6 MB. Free memory was 267.5 MB in the beginning and 245.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 864299.42 ms. Allocated memory was 314.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 245.4 MB in the beginning and 1.1 GB in the end (delta: -900.1 MB). Peak memory consumption was 355.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 35 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 864.1s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 625.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 673 SDslu, 406 SDs, 0 SdLazy, 3453 SolverSat, 1126 SolverUnsat, 90 SolverUnknown, 0 SolverNotchecked, 181.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2968 GetRequests, 2274 SyntacticMatches, 44 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16360 ImplicationChecksByTransitivity, 626.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25128occurred in iteration=10, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 231.9s InterpolantComputationTime, 1283 NumberOfCodeBlocks, 1281 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 2518 ConstructedInterpolants, 395 QuantifiedInterpolants, 2514005 SizeOfPredicates, 110 NumberOfNonLiveVariables, 2878 ConjunctsInSsa, 313 ConjunctsInUnsatCore, 48 InterpolantComputations, 10 PerfectInterpolantSequences, 248/1650 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 could not prove your program: Timeout Completed graceful shutdown