/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:46:13,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:46:13,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:46:13,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:46:13,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:46:13,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:46:13,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:46:13,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:46:13,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:46:13,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:46:13,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:46:13,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:46:13,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:46:13,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:46:13,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:46:13,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:46:13,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:46:13,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:46:13,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:46:13,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:46:13,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:46:13,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:46:13,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:46:13,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:46:13,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:46:13,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:46:13,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:46:13,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:46:13,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:46:13,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:46:13,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:46:13,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:46:13,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:46:13,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:46:13,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:46:13,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:46:13,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:46:13,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:46:13,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:46:13,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:46:13,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:46:13,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 18:46:13,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:46:13,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:46:13,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:46:13,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:46:13,334 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:46:13,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:46:13,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:46:13,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:46:13,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:46:13,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:46:13,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:46:13,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:46:13,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:46:13,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:46:13,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:46:13,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:46:13,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:46:13,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:46:13,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:46:13,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:46:13,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:46:13,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:46:13,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:46:13,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:46:13,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:46:13,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:46:13,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:46:13,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:46:13,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:46:13,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:46:13,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:46:13,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:46:13,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:46:13,653 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:46:13,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-17 18:46:13,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d135048/a1288ddfed9d4622954c3f2a948ec506/FLAGef329ebed [2020-04-17 18:46:14,332 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:46:14,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-17 18:46:14,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d135048/a1288ddfed9d4622954c3f2a948ec506/FLAGef329ebed [2020-04-17 18:46:14,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d135048/a1288ddfed9d4622954c3f2a948ec506 [2020-04-17 18:46:14,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:46:14,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:46:14,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:46:14,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:46:14,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:46:14,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:46:14" (1/1) ... [2020-04-17 18:46:14,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce5a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:14, skipping insertion in model container [2020-04-17 18:46:14,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:46:14" (1/1) ... [2020-04-17 18:46:14,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:46:14,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:46:15,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:46:15,323 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:46:15,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:46:15,532 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:46:15,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15 WrapperNode [2020-04-17 18:46:15,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:46:15,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:46:15,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:46:15,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:46:15,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:46:15,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:46:15,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:46:15,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:46:15,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (1/1) ... [2020-04-17 18:46:15,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:46:15,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:46:15,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:46:15,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:46:15,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (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 [2020-04-17 18:46:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-17 18:46:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-17 18:46:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-17 18:46:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-17 18:46:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:46:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:46:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 18:46:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:46:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-17 18:46:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 18:46:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:46:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:46:15,740 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:46:16,291 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:46:16,291 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-04-17 18:46:16,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:46:16 BoogieIcfgContainer [2020-04-17 18:46:16,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:46:16,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:46:16,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:46:16,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:46:16,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:46:14" (1/3) ... [2020-04-17 18:46:16,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742a9413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:46:16, skipping insertion in model container [2020-04-17 18:46:16,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:46:15" (2/3) ... [2020-04-17 18:46:16,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742a9413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:46:16, skipping insertion in model container [2020-04-17 18:46:16,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:46:16" (3/3) ... [2020-04-17 18:46:16,304 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-04-17 18:46:16,315 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:46:16,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:46:16,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 18:46:16,324 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:46:16,359 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,359 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,359 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,361 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,361 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,361 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,363 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,363 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,364 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,364 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,364 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,365 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,365 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,365 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,365 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,366 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,366 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,366 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,366 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,367 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,367 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,367 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,367 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,367 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,368 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,368 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,368 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,368 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,369 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,369 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,369 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,369 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,370 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,370 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,370 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,371 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,371 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,371 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,371 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,372 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,372 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,372 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,373 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,373 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,373 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,373 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,373 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,374 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,374 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,374 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,375 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,375 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,375 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,375 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,376 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,376 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,392 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,392 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,393 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,393 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,393 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,394 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,394 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,394 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,394 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,395 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,395 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,395 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,395 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,396 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,396 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,396 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,396 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,397 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,398 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,398 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,398 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,398 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,398 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,399 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,399 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,399 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,399 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,400 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,400 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,400 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,400 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,400 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,401 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,401 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,401 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,401 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,402 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,402 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,402 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,402 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,402 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,403 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,403 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,403 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,403 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,404 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,404 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,404 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,404 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,404 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,405 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,405 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,408 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,409 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,409 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,409 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,409 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,410 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,410 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,410 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,410 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,410 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,411 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,412 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,412 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,412 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,412 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,412 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,413 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,413 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,418 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,419 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,419 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,419 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,419 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,419 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,420 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,420 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,420 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,420 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,420 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,421 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,422 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:46:16,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 18:46:16,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:46:16,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:46:16,464 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:46:16,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:46:16,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:46:16,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:46:16,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:46:16,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:46:16,483 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 298 flow [2020-04-17 18:46:16,485 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-17 18:46:16,552 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-17 18:46:16,553 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 18:46:16,562 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-17 18:46:16,569 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-17 18:46:16,636 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-17 18:46:16,636 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 18:46:16,639 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-17 18:46:16,645 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-04-17 18:46:16,647 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:46:19,954 WARN L192 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-04-17 18:46:20,152 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-04-17 18:46:20,290 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-04-17 18:46:20,575 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-04-17 18:46:20,798 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-17 18:46:20,810 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7699 [2020-04-17 18:46:20,810 INFO L214 etLargeBlockEncoding]: Total number of compositions: 118 [2020-04-17 18:46:20,813 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-04-17 18:46:20,836 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-04-17 18:46:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-04-17 18:46:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 18:46:20,845 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:20,846 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 18:46:20,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:20,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:20,852 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 1 times [2020-04-17 18:46:20,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:20,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464120931] [2020-04-17 18:46:20,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:21,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464120931] [2020-04-17 18:46:21,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:21,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:46:21,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427428054] [2020-04-17 18:46:21,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:46:21,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:21,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:46:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:21,085 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-04-17 18:46:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:21,195 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-04-17 18:46:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:46:21,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 18:46:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:21,234 INFO L225 Difference]: With dead ends: 504 [2020-04-17 18:46:21,234 INFO L226 Difference]: Without dead ends: 460 [2020-04-17 18:46:21,236 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-04-17 18:46:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-04-17 18:46:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-17 18:46:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-04-17 18:46:21,321 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-04-17 18:46:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:21,321 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-04-17 18:46:21,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:46:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-04-17 18:46:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:46:21,323 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:21,323 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:21,323 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:21,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:21,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 1 times [2020-04-17 18:46:21,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:21,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429412096] [2020-04-17 18:46:21,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:21,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429412096] [2020-04-17 18:46:21,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:21,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:46:21,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329727102] [2020-04-17 18:46:21,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:46:21,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:46:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:21,433 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-04-17 18:46:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:21,449 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-04-17 18:46:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:46:21,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:46:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:21,455 INFO L225 Difference]: With dead ends: 464 [2020-04-17 18:46:21,455 INFO L226 Difference]: Without dead ends: 464 [2020-04-17 18:46:21,456 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-17 18:46:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-17 18:46:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-17 18:46:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-04-17 18:46:21,501 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-04-17 18:46:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:21,505 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-04-17 18:46:21,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:46:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-04-17 18:46:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 18:46:21,507 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:21,507 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:21,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 1 times [2020-04-17 18:46:21,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:21,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537701644] [2020-04-17 18:46:21,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:21,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537701644] [2020-04-17 18:46:21,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002886571] [2020-04-17 18:46:21,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:21,740 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-17 18:46:21,745 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:21,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:21,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-17 18:46:21,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107167542] [2020-04-17 18:46:21,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 18:46:21,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:21,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 18:46:21,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:46:21,784 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-04-17 18:46:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:21,918 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-04-17 18:46:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:46:21,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-17 18:46:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:21,927 INFO L225 Difference]: With dead ends: 866 [2020-04-17 18:46:21,927 INFO L226 Difference]: Without dead ends: 851 [2020-04-17 18:46:21,928 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-17 18:46:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-04-17 18:46:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-04-17 18:46:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-04-17 18:46:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-04-17 18:46:21,962 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-04-17 18:46:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:21,963 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-04-17 18:46:21,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 18:46:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-04-17 18:46:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 18:46:21,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:21,973 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:22,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:22,178 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 1 times [2020-04-17 18:46:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:22,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177832990] [2020-04-17 18:46:22,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:22,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177832990] [2020-04-17 18:46:22,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:22,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:46:22,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139193178] [2020-04-17 18:46:22,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:46:22,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:46:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:22,256 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-04-17 18:46:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:22,281 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-04-17 18:46:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:46:22,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 18:46:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:22,287 INFO L225 Difference]: With dead ends: 304 [2020-04-17 18:46:22,287 INFO L226 Difference]: Without dead ends: 304 [2020-04-17 18:46:22,288 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-17 18:46:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-04-17 18:46:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-17 18:46:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-04-17 18:46:22,299 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-04-17 18:46:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:22,300 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-04-17 18:46:22,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:46:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-04-17 18:46:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:46:22,303 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:22,303 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:22,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:22,304 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 1 times [2020-04-17 18:46:22,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:22,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124354189] [2020-04-17 18:46:22,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:22,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124354189] [2020-04-17 18:46:22,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:22,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:46:22,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976652442] [2020-04-17 18:46:22,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:46:22,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:22,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:46:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:22,389 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-04-17 18:46:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:22,447 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-04-17 18:46:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:46:22,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 18:46:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:22,451 INFO L225 Difference]: With dead ends: 372 [2020-04-17 18:46:22,451 INFO L226 Difference]: Without dead ends: 372 [2020-04-17 18:46:22,452 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:46:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-04-17 18:46:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-04-17 18:46:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-04-17 18:46:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-04-17 18:46:22,462 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-04-17 18:46:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:22,463 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-04-17 18:46:22,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:46:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-04-17 18:46:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 18:46:22,465 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:22,465 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-17 18:46:22,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 2 times [2020-04-17 18:46:22,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:22,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366773596] [2020-04-17 18:46:22,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:22,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366773596] [2020-04-17 18:46:22,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533202514] [2020-04-17 18:46:22,636 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:22,747 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:46:22,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:22,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 18:46:22,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:22,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:22,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-04-17 18:46:22,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474156549] [2020-04-17 18:46:22,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-17 18:46:22,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-17 18:46:22,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-17 18:46:22,781 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 10 states. [2020-04-17 18:46:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:22,935 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-04-17 18:46:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-17 18:46:22,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-04-17 18:46:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:22,939 INFO L225 Difference]: With dead ends: 542 [2020-04-17 18:46:22,940 INFO L226 Difference]: Without dead ends: 542 [2020-04-17 18:46:22,941 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-04-17 18:46:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-04-17 18:46:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-04-17 18:46:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-04-17 18:46:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-04-17 18:46:22,953 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-04-17 18:46:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:22,954 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-04-17 18:46:22,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-17 18:46:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-04-17 18:46:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:46:22,955 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:22,955 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:23,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:23,160 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 1 times [2020-04-17 18:46:23,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:23,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132017155] [2020-04-17 18:46:23,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:24,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132017155] [2020-04-17 18:46:24,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:24,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-17 18:46:24,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102144298] [2020-04-17 18:46:24,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-17 18:46:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-17 18:46:24,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-04-17 18:46:24,174 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 11 states. [2020-04-17 18:46:24,817 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-04-17 18:46:25,077 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-04-17 18:46:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:25,289 INFO L93 Difference]: Finished difference Result 632 states and 1366 transitions. [2020-04-17 18:46:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:46:25,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-04-17 18:46:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:25,293 INFO L225 Difference]: With dead ends: 632 [2020-04-17 18:46:25,293 INFO L226 Difference]: Without dead ends: 570 [2020-04-17 18:46:25,294 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-17 18:46:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-04-17 18:46:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 416. [2020-04-17 18:46:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-04-17 18:46:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 919 transitions. [2020-04-17 18:46:25,307 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 919 transitions. Word has length 21 [2020-04-17 18:46:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:25,307 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 919 transitions. [2020-04-17 18:46:25,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-17 18:46:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 919 transitions. [2020-04-17 18:46:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:46:25,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:25,309 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:25,309 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:25,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1329791031, now seen corresponding path program 2 times [2020-04-17 18:46:25,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:25,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176281884] [2020-04-17 18:46:25,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:25,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176281884] [2020-04-17 18:46:25,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:46:25,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-17 18:46:25,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895656560] [2020-04-17 18:46:25,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-17 18:46:25,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-17 18:46:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-17 18:46:25,611 INFO L87 Difference]: Start difference. First operand 416 states and 919 transitions. Second operand 11 states. [2020-04-17 18:46:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:26,012 INFO L93 Difference]: Finished difference Result 695 states and 1501 transitions. [2020-04-17 18:46:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:46:26,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-04-17 18:46:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:26,020 INFO L225 Difference]: With dead ends: 695 [2020-04-17 18:46:26,020 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 18:46:26,021 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-17 18:46:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 18:46:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 416. [2020-04-17 18:46:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-04-17 18:46:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 916 transitions. [2020-04-17 18:46:26,033 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 916 transitions. Word has length 21 [2020-04-17 18:46:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:26,033 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 916 transitions. [2020-04-17 18:46:26,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-17 18:46:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 916 transitions. [2020-04-17 18:46:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-17 18:46:26,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:26,035 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:26,035 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:26,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 1 times [2020-04-17 18:46:26,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:26,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877812825] [2020-04-17 18:46:26,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:26,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877812825] [2020-04-17 18:46:26,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088068951] [2020-04-17 18:46:26,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:26,194 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 18:46:26,195 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:46:26,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 18:46:26,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-04-17 18:46:26,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835508616] [2020-04-17 18:46:26,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:46:26,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:26,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:46:26,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-17 18:46:26,223 INFO L87 Difference]: Start difference. First operand 416 states and 916 transitions. Second operand 6 states. [2020-04-17 18:46:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:26,298 INFO L93 Difference]: Finished difference Result 576 states and 1231 transitions. [2020-04-17 18:46:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:46:26,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-04-17 18:46:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:26,303 INFO L225 Difference]: With dead ends: 576 [2020-04-17 18:46:26,303 INFO L226 Difference]: Without dead ends: 566 [2020-04-17 18:46:26,304 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-17 18:46:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-04-17 18:46:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 476. [2020-04-17 18:46:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-04-17 18:46:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1042 transitions. [2020-04-17 18:46:26,318 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1042 transitions. Word has length 24 [2020-04-17 18:46:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:26,319 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 1042 transitions. [2020-04-17 18:46:26,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:46:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1042 transitions. [2020-04-17 18:46:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-17 18:46:26,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:26,365 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-04-17 18:46:26,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:26,566 INFO L427 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:26,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 3 times [2020-04-17 18:46:26,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:26,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869871783] [2020-04-17 18:46:26,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:26,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869871783] [2020-04-17 18:46:26,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618362342] [2020-04-17 18:46:26,785 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:26,904 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-17 18:46:26,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:26,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-17 18:46:26,910 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:26,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:26,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-04-17 18:46:26,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928768973] [2020-04-17 18:46:26,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 18:46:26,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 18:46:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-04-17 18:46:26,941 INFO L87 Difference]: Start difference. First operand 476 states and 1042 transitions. Second operand 13 states. [2020-04-17 18:46:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:27,135 INFO L93 Difference]: Finished difference Result 789 states and 1669 transitions. [2020-04-17 18:46:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-17 18:46:27,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-04-17 18:46:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:27,141 INFO L225 Difference]: With dead ends: 789 [2020-04-17 18:46:27,141 INFO L226 Difference]: Without dead ends: 789 [2020-04-17 18:46:27,142 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-04-17 18:46:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-04-17 18:46:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 553. [2020-04-17 18:46:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-04-17 18:46:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1211 transitions. [2020-04-17 18:46:27,159 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1211 transitions. Word has length 27 [2020-04-17 18:46:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:27,159 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 1211 transitions. [2020-04-17 18:46:27,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 18:46:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1211 transitions. [2020-04-17 18:46:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-17 18:46:27,162 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:27,162 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:27,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:27,367 INFO L427 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:27,368 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 3 times [2020-04-17 18:46:27,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:27,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113961831] [2020-04-17 18:46:27,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:28,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113961831] [2020-04-17 18:46:28,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205760001] [2020-04-17 18:46:28,051 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:28,126 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-04-17 18:46:28,126 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:28,128 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 50 conjunts are in the unsatisfiable core [2020-04-17 18:46:28,131 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:28,209 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:28,210 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 508 treesize of output 518 [2020-04-17 18:46:28,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:28,335 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:28,621 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 27 [2020-04-17 18:46:28,622 INFO L619 ElimStorePlain]: treesize reduction 8122, result has 0.4 percent of original size [2020-04-17 18:46:28,623 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:46:28,623 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:49, output treesize:4 [2020-04-17 18:46:28,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:46:28,865 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:28,873 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:28,874 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:28,874 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-17 18:46:29,091 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2020-04-17 18:46:29,092 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:29,102 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:29,103 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:29,104 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-17 18:46:29,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:29,534 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2020-04-17 18:46:29,535 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:29,538 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2020-04-17 18:46:29,538 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:29,557 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 18:46:29,558 INFO L539 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:29,558 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-17 18:46:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:46:29,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 18:46:29,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28 [2020-04-17 18:46:29,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157079452] [2020-04-17 18:46:29,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 18:46:29,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 18:46:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2020-04-17 18:46:29,629 INFO L87 Difference]: Start difference. First operand 553 states and 1211 transitions. Second operand 15 states. [2020-04-17 18:46:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:33,423 INFO L93 Difference]: Finished difference Result 1207 states and 2573 transitions. [2020-04-17 18:46:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-17 18:46:33,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-04-17 18:46:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:33,430 INFO L225 Difference]: With dead ends: 1207 [2020-04-17 18:46:33,430 INFO L226 Difference]: Without dead ends: 1167 [2020-04-17 18:46:33,431 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=377, Invalid=2929, Unknown=0, NotChecked=0, Total=3306 [2020-04-17 18:46:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-04-17 18:46:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 657. [2020-04-17 18:46:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-04-17 18:46:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1465 transitions. [2020-04-17 18:46:33,451 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1465 transitions. Word has length 28 [2020-04-17 18:46:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:33,452 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 1465 transitions. [2020-04-17 18:46:33,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 18:46:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1465 transitions. [2020-04-17 18:46:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-17 18:46:33,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:33,454 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:33,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:33,665 INFO L427 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 2 times [2020-04-17 18:46:33,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:33,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719300194] [2020-04-17 18:46:33,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:46:33,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719300194] [2020-04-17 18:46:33,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821270696] [2020-04-17 18:46:33,740 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-17 18:46:33,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 18:46:33,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:33,830 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-17 18:46:33,831 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:46:33,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:33,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-04-17 18:46:33,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251176341] [2020-04-17 18:46:33,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-17 18:46:33,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-17 18:46:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-04-17 18:46:33,864 INFO L87 Difference]: Start difference. First operand 657 states and 1465 transitions. Second operand 11 states. [2020-04-17 18:46:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:34,026 INFO L93 Difference]: Finished difference Result 1031 states and 2213 transitions. [2020-04-17 18:46:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-17 18:46:34,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-04-17 18:46:34,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:34,031 INFO L225 Difference]: With dead ends: 1031 [2020-04-17 18:46:34,031 INFO L226 Difference]: Without dead ends: 1031 [2020-04-17 18:46:34,032 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-04-17 18:46:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-04-17 18:46:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 701. [2020-04-17 18:46:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-04-17 18:46:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1589 transitions. [2020-04-17 18:46:34,075 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1589 transitions. Word has length 31 [2020-04-17 18:46:34,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:34,075 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1589 transitions. [2020-04-17 18:46:34,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-17 18:46:34,075 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1589 transitions. [2020-04-17 18:46:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-17 18:46:34,077 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:34,077 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-04-17 18:46:34,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:34,281 INFO L427 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 4 times [2020-04-17 18:46:34,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:34,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672815657] [2020-04-17 18:46:34,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:34,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672815657] [2020-04-17 18:46:34,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720495738] [2020-04-17 18:46:34,408 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:34,513 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:46:34,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:34,515 INFO L264 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-17 18:46:34,517 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:34,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:34,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2020-04-17 18:46:34,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914880919] [2020-04-17 18:46:34,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 18:46:34,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 18:46:34,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:46:34,554 INFO L87 Difference]: Start difference. First operand 701 states and 1589 transitions. Second operand 16 states. [2020-04-17 18:46:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:34,774 INFO L93 Difference]: Finished difference Result 1183 states and 2570 transitions. [2020-04-17 18:46:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 18:46:34,774 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-04-17 18:46:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:34,781 INFO L225 Difference]: With dead ends: 1183 [2020-04-17 18:46:34,781 INFO L226 Difference]: Without dead ends: 1183 [2020-04-17 18:46:34,782 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-17 18:46:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-04-17 18:46:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 792. [2020-04-17 18:46:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-04-17 18:46:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1797 transitions. [2020-04-17 18:46:34,803 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1797 transitions. Word has length 34 [2020-04-17 18:46:34,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:34,804 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1797 transitions. [2020-04-17 18:46:34,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 18:46:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1797 transitions. [2020-04-17 18:46:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-17 18:46:34,807 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:34,807 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:35,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:35,020 INFO L427 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 1 times [2020-04-17 18:46:35,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:35,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773668744] [2020-04-17 18:46:35,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:36,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773668744] [2020-04-17 18:46:36,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378958773] [2020-04-17 18:46:36,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:36,181 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 73 conjunts are in the unsatisfiable core [2020-04-17 18:46:36,184 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:36,200 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:36,201 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 611 treesize of output 585 [2020-04-17 18:46:36,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:36,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:36,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:36,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:36,206 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 18:46:36,473 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 26 [2020-04-17 18:46:36,474 INFO L619 ElimStorePlain]: treesize reduction 1379, result has 2.0 percent of original size [2020-04-17 18:46:36,475 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:46:36,476 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:8 [2020-04-17 18:46:36,667 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:46:36,668 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:36,677 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:36,678 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:36,678 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-17 18:46:36,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:46:36,945 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-04-17 18:46:36,946 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:36,960 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:36,961 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:36,961 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:22 [2020-04-17 18:46:37,066 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-04-17 18:46:37,067 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:37,078 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:37,079 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:37,080 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:29 [2020-04-17 18:46:37,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:37,699 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2020-04-17 18:46:37,700 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:37,707 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2020-04-17 18:46:37,708 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:37,727 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 18:46:37,728 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:37,728 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:92, output treesize:11 [2020-04-17 18:46:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:37,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:37,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 42 [2020-04-17 18:46:37,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525909930] [2020-04-17 18:46:37,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-04-17 18:46:37,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-04-17 18:46:37,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1727, Unknown=0, NotChecked=0, Total=1892 [2020-04-17 18:46:37,860 INFO L87 Difference]: Start difference. First operand 792 states and 1797 transitions. Second operand 44 states. [2020-04-17 18:46:41,003 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-04-17 18:46:41,221 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-04-17 18:46:41,613 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-04-17 18:46:42,110 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-04-17 18:46:42,512 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-04-17 18:46:43,980 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-04-17 18:46:44,460 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-04-17 18:46:44,916 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-04-17 18:46:48,511 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2020-04-17 18:46:48,809 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-04-17 18:46:50,805 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-04-17 18:46:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:51,028 INFO L93 Difference]: Finished difference Result 2798 states and 5917 transitions. [2020-04-17 18:46:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-04-17 18:46:51,028 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 36 [2020-04-17 18:46:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:51,040 INFO L225 Difference]: With dead ends: 2798 [2020-04-17 18:46:51,040 INFO L226 Difference]: Without dead ends: 2455 [2020-04-17 18:46:51,044 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3779 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1386, Invalid=11724, Unknown=0, NotChecked=0, Total=13110 [2020-04-17 18:46:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-04-17 18:46:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 1121. [2020-04-17 18:46:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-04-17 18:46:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 2573 transitions. [2020-04-17 18:46:51,076 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 2573 transitions. Word has length 36 [2020-04-17 18:46:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:51,076 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 2573 transitions. [2020-04-17 18:46:51,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-04-17 18:46:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 2573 transitions. [2020-04-17 18:46:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-17 18:46:51,079 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:51,079 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:51,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:51,283 INFO L427 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:51,284 INFO L82 PathProgramCache]: Analyzing trace with hash 460075742, now seen corresponding path program 2 times [2020-04-17 18:46:51,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:51,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8405392] [2020-04-17 18:46:51,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:52,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8405392] [2020-04-17 18:46:52,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462455604] [2020-04-17 18:46:52,077 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:52,158 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-17 18:46:52,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:52,161 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2020-04-17 18:46:52,164 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:52,289 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:46:52,289 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:52,296 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:46:52,296 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:52,297 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-04-17 18:46:52,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:46:52,771 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2020-04-17 18:46:52,772 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:52,785 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2020-04-17 18:46:52,785 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:46:52,799 INFO L619 ElimStorePlain]: treesize reduction 24, result has 31.4 percent of original size [2020-04-17 18:46:52,800 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:46:52,800 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:94, output treesize:11 [2020-04-17 18:46:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:46:52,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 18:46:52,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-04-17 18:46:52,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484620491] [2020-04-17 18:46:52,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 18:46:52,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:52,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 18:46:52,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2020-04-17 18:46:52,855 INFO L87 Difference]: Start difference. First operand 1121 states and 2573 transitions. Second operand 13 states. [2020-04-17 18:46:55,268 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-04-17 18:46:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:57,329 INFO L93 Difference]: Finished difference Result 1668 states and 3691 transitions. [2020-04-17 18:46:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-17 18:46:57,330 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-04-17 18:46:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:57,340 INFO L225 Difference]: With dead ends: 1668 [2020-04-17 18:46:57,340 INFO L226 Difference]: Without dead ends: 1628 [2020-04-17 18:46:57,345 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=330, Invalid=2022, Unknown=0, NotChecked=0, Total=2352 [2020-04-17 18:46:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-04-17 18:46:57,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 917. [2020-04-17 18:46:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-04-17 18:46:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2051 transitions. [2020-04-17 18:46:57,375 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2051 transitions. Word has length 36 [2020-04-17 18:46:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:57,376 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 2051 transitions. [2020-04-17 18:46:57,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 18:46:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2051 transitions. [2020-04-17 18:46:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-17 18:46:57,380 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:57,380 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:57,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:57,594 INFO L427 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1085658049, now seen corresponding path program 3 times [2020-04-17 18:46:57,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:57,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916403755] [2020-04-17 18:46:57,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:46:57,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916403755] [2020-04-17 18:46:57,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676790889] [2020-04-17 18:46:57,752 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:57,849 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 18:46:57,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:57,851 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-17 18:46:57,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-04-17 18:46:57,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 18:46:57,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-04-17 18:46:57,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727141383] [2020-04-17 18:46:57,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:46:57,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:57,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:46:57,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-04-17 18:46:57,934 INFO L87 Difference]: Start difference. First operand 917 states and 2051 transitions. Second operand 6 states. [2020-04-17 18:46:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:58,059 INFO L93 Difference]: Finished difference Result 1255 states and 2714 transitions. [2020-04-17 18:46:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:46:58,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-17 18:46:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:58,064 INFO L225 Difference]: With dead ends: 1255 [2020-04-17 18:46:58,064 INFO L226 Difference]: Without dead ends: 1255 [2020-04-17 18:46:58,065 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-04-17 18:46:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-04-17 18:46:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 931. [2020-04-17 18:46:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-04-17 18:46:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 2092 transitions. [2020-04-17 18:46:58,083 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 2092 transitions. Word has length 38 [2020-04-17 18:46:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:58,084 INFO L479 AbstractCegarLoop]: Abstraction has 931 states and 2092 transitions. [2020-04-17 18:46:58,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:46:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 2092 transitions. [2020-04-17 18:46:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-17 18:46:58,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:58,086 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:58,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:58,292 INFO L427 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash -448635967, now seen corresponding path program 4 times [2020-04-17 18:46:58,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:58,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085686881] [2020-04-17 18:46:58,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:46:58,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085686881] [2020-04-17 18:46:58,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203076022] [2020-04-17 18:46:58,404 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:58,509 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:46:58,509 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:58,511 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-17 18:46:58,513 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:46:58,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:58,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 11 [2020-04-17 18:46:58,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794770292] [2020-04-17 18:46:58,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 18:46:58,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:58,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 18:46:58,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-17 18:46:58,526 INFO L87 Difference]: Start difference. First operand 931 states and 2092 transitions. Second operand 12 states. [2020-04-17 18:46:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:58,677 INFO L93 Difference]: Finished difference Result 1292 states and 2793 transitions. [2020-04-17 18:46:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-17 18:46:58,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-04-17 18:46:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:58,684 INFO L225 Difference]: With dead ends: 1292 [2020-04-17 18:46:58,684 INFO L226 Difference]: Without dead ends: 1292 [2020-04-17 18:46:58,685 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-04-17 18:46:58,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-04-17 18:46:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 931. [2020-04-17 18:46:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-04-17 18:46:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 2092 transitions. [2020-04-17 18:46:58,704 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 2092 transitions. Word has length 38 [2020-04-17 18:46:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:58,704 INFO L479 AbstractCegarLoop]: Abstraction has 931 states and 2092 transitions. [2020-04-17 18:46:58,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 18:46:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 2092 transitions. [2020-04-17 18:46:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-17 18:46:58,706 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:58,707 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-04-17 18:46:58,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:58,918 INFO L427 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:58,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1774953421, now seen corresponding path program 5 times [2020-04-17 18:46:58,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:58,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755994961] [2020-04-17 18:46:58,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:46:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:59,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755994961] [2020-04-17 18:46:59,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552849994] [2020-04-17 18:46:59,093 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_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 [2020-04-17 18:46:59,225 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-04-17 18:46:59,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:46:59,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 18:46:59,228 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:46:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:46:59,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:46:59,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2020-04-17 18:46:59,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639845205] [2020-04-17 18:46:59,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-17 18:46:59,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:46:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-17 18:46:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-04-17 18:46:59,263 INFO L87 Difference]: Start difference. First operand 931 states and 2092 transitions. Second operand 19 states. [2020-04-17 18:46:59,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:46:59,500 INFO L93 Difference]: Finished difference Result 1375 states and 2978 transitions. [2020-04-17 18:46:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-17 18:46:59,501 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-04-17 18:46:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:46:59,508 INFO L225 Difference]: With dead ends: 1375 [2020-04-17 18:46:59,508 INFO L226 Difference]: Without dead ends: 1375 [2020-04-17 18:46:59,509 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-17 18:46:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-04-17 18:46:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1008. [2020-04-17 18:46:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-04-17 18:46:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 2261 transitions. [2020-04-17 18:46:59,530 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 2261 transitions. Word has length 41 [2020-04-17 18:46:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:46:59,530 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 2261 transitions. [2020-04-17 18:46:59,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-17 18:46:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 2261 transitions. [2020-04-17 18:46:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-17 18:46:59,533 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:46:59,533 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:46:59,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:46:59,739 INFO L427 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:46:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:46:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 223818986, now seen corresponding path program 3 times [2020-04-17 18:46:59,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:46:59,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400515156] [2020-04-17 18:46:59,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:46:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:00,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400515156] [2020-04-17 18:47:00,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513383715] [2020-04-17 18:47:00,790 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:00,919 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-17 18:47:00,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:00,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 79 conjunts are in the unsatisfiable core [2020-04-17 18:47:00,925 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:00,955 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:00,956 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 149 [2020-04-17 18:47:00,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:00,982 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:01,246 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 30 [2020-04-17 18:47:01,247 INFO L619 ElimStorePlain]: treesize reduction 1125, result has 3.4 percent of original size [2020-04-17 18:47:01,247 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:47:01,248 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:11 [2020-04-17 18:47:01,539 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:47:01,539 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:01,549 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:01,550 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:01,550 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:29 [2020-04-17 18:47:01,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:47:01,872 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2020-04-17 18:47:01,873 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:01,892 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:01,893 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:01,894 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 18:47:02,011 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-04-17 18:47:02,012 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:02,025 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:02,025 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:02,026 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:34 [2020-04-17 18:47:02,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:02,788 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2020-04-17 18:47:02,789 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:02,793 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2020-04-17 18:47:02,793 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:02,830 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 18:47:02,831 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:02,831 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:92, output treesize:11 [2020-04-17 18:47:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:02,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:02,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 43 [2020-04-17 18:47:02,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495275486] [2020-04-17 18:47:02,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-04-17 18:47:02,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:02,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-04-17 18:47:02,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1858, Unknown=0, NotChecked=0, Total=1980 [2020-04-17 18:47:02,954 INFO L87 Difference]: Start difference. First operand 1008 states and 2261 transitions. Second operand 45 states. [2020-04-17 18:47:05,161 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-04-17 18:47:07,066 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-17 18:47:07,231 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-04-17 18:47:07,611 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-04-17 18:47:07,825 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-04-17 18:47:08,360 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-17 18:47:08,571 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-04-17 18:47:08,925 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-04-17 18:47:09,775 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-04-17 18:47:10,488 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-04-17 18:47:10,663 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-04-17 18:47:11,205 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-04-17 18:47:11,907 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-04-17 18:47:12,103 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-17 18:47:12,446 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-04-17 18:47:12,669 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-04-17 18:47:13,195 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-04-17 18:47:13,394 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-04-17 18:47:13,788 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:47:15,200 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-17 18:47:15,401 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-04-17 18:47:16,097 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-04-17 18:47:16,311 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-04-17 18:47:16,778 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-04-17 18:47:17,004 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-04-17 18:47:17,942 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-04-17 18:47:18,342 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-04-17 18:47:18,637 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-04-17 18:47:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:18,835 INFO L93 Difference]: Finished difference Result 3057 states and 6470 transitions. [2020-04-17 18:47:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-04-17 18:47:18,836 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 43 [2020-04-17 18:47:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:18,851 INFO L225 Difference]: With dead ends: 3057 [2020-04-17 18:47:18,851 INFO L226 Difference]: Without dead ends: 3057 [2020-04-17 18:47:18,856 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1585, Invalid=15971, Unknown=0, NotChecked=0, Total=17556 [2020-04-17 18:47:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2020-04-17 18:47:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 1330. [2020-04-17 18:47:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-04-17 18:47:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 3082 transitions. [2020-04-17 18:47:18,887 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 3082 transitions. Word has length 43 [2020-04-17 18:47:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:18,888 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 3082 transitions. [2020-04-17 18:47:18,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-04-17 18:47:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 3082 transitions. [2020-04-17 18:47:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 18:47:18,891 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:18,891 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:47:19,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:19,096 INFO L427 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash 291881305, now seen corresponding path program 5 times [2020-04-17 18:47:19,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:19,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059992723] [2020-04-17 18:47:19,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:47:19,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059992723] [2020-04-17 18:47:19,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539680265] [2020-04-17 18:47:19,215 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:19,357 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-04-17 18:47:19,357 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:19,359 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 18:47:19,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:47:19,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:19,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 13 [2020-04-17 18:47:19,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177176833] [2020-04-17 18:47:19,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-17 18:47:19,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-17 18:47:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-04-17 18:47:19,400 INFO L87 Difference]: Start difference. First operand 1330 states and 3082 transitions. Second operand 14 states. [2020-04-17 18:47:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:19,669 INFO L93 Difference]: Finished difference Result 1860 states and 4137 transitions. [2020-04-17 18:47:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 18:47:19,670 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-04-17 18:47:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:19,688 INFO L225 Difference]: With dead ends: 1860 [2020-04-17 18:47:19,689 INFO L226 Difference]: Without dead ends: 1860 [2020-04-17 18:47:19,689 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-04-17 18:47:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-04-17 18:47:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1348. [2020-04-17 18:47:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-04-17 18:47:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 3131 transitions. [2020-04-17 18:47:19,719 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 3131 transitions. Word has length 45 [2020-04-17 18:47:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:19,720 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 3131 transitions. [2020-04-17 18:47:19,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-17 18:47:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 3131 transitions. [2020-04-17 18:47:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 18:47:19,723 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:19,723 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:47:19,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:19,935 INFO L427 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash 373342937, now seen corresponding path program 6 times [2020-04-17 18:47:19,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:19,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234766824] [2020-04-17 18:47:19,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:47:20,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234766824] [2020-04-17 18:47:20,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959347801] [2020-04-17 18:47:20,046 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:20,181 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-04-17 18:47:20,182 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:20,183 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 18:47:20,184 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:47:20,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:20,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 13 [2020-04-17 18:47:20,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388696189] [2020-04-17 18:47:20,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-17 18:47:20,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:20,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-17 18:47:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-04-17 18:47:20,211 INFO L87 Difference]: Start difference. First operand 1348 states and 3131 transitions. Second operand 14 states. [2020-04-17 18:47:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:20,414 INFO L93 Difference]: Finished difference Result 1906 states and 4255 transitions. [2020-04-17 18:47:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 18:47:20,415 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-04-17 18:47:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:20,424 INFO L225 Difference]: With dead ends: 1906 [2020-04-17 18:47:20,424 INFO L226 Difference]: Without dead ends: 1906 [2020-04-17 18:47:20,426 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-04-17 18:47:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-04-17 18:47:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1392. [2020-04-17 18:47:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2020-04-17 18:47:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3255 transitions. [2020-04-17 18:47:20,449 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3255 transitions. Word has length 45 [2020-04-17 18:47:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:20,450 INFO L479 AbstractCegarLoop]: Abstraction has 1392 states and 3255 transitions. [2020-04-17 18:47:20,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-17 18:47:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3255 transitions. [2020-04-17 18:47:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 18:47:20,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:20,453 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:47:20,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:20,658 INFO L427 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:20,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1181218125, now seen corresponding path program 7 times [2020-04-17 18:47:20,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:20,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584023314] [2020-04-17 18:47:20,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:47:20,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584023314] [2020-04-17 18:47:20,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102043877] [2020-04-17 18:47:20,806 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:20,930 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 18:47:20,931 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:47:20,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:20,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 14 [2020-04-17 18:47:20,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120841408] [2020-04-17 18:47:20,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 18:47:20,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 18:47:20,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-04-17 18:47:20,939 INFO L87 Difference]: Start difference. First operand 1392 states and 3255 transitions. Second operand 15 states. [2020-04-17 18:47:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:21,160 INFO L93 Difference]: Finished difference Result 1785 states and 4036 transitions. [2020-04-17 18:47:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-17 18:47:21,161 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-17 18:47:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:21,165 INFO L225 Difference]: With dead ends: 1785 [2020-04-17 18:47:21,165 INFO L226 Difference]: Without dead ends: 1785 [2020-04-17 18:47:21,166 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-04-17 18:47:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-04-17 18:47:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1406. [2020-04-17 18:47:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1406 states. [2020-04-17 18:47:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3292 transitions. [2020-04-17 18:47:21,195 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3292 transitions. Word has length 45 [2020-04-17 18:47:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:21,196 INFO L479 AbstractCegarLoop]: Abstraction has 1406 states and 3292 transitions. [2020-04-17 18:47:21,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 18:47:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3292 transitions. [2020-04-17 18:47:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-17 18:47:21,199 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:21,200 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2020-04-17 18:47:21,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:21,404 INFO L427 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 190021147, now seen corresponding path program 6 times [2020-04-17 18:47:21,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:21,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347809373] [2020-04-17 18:47:21,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:21,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347809373] [2020-04-17 18:47:21,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974783064] [2020-04-17 18:47:21,608 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:21,798 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-04-17 18:47:21,799 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:21,800 INFO L264 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 18:47:21,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:21,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:21,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 21 [2020-04-17 18:47:21,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187879752] [2020-04-17 18:47:21,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-17 18:47:21,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:21,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-17 18:47:21,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-17 18:47:21,822 INFO L87 Difference]: Start difference. First operand 1406 states and 3292 transitions. Second operand 22 states. [2020-04-17 18:47:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:22,142 INFO L93 Difference]: Finished difference Result 2021 states and 4518 transitions. [2020-04-17 18:47:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 18:47:22,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2020-04-17 18:47:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:22,147 INFO L225 Difference]: With dead ends: 2021 [2020-04-17 18:47:22,148 INFO L226 Difference]: Without dead ends: 2021 [2020-04-17 18:47:22,148 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2020-04-17 18:47:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2020-04-17 18:47:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1483. [2020-04-17 18:47:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2020-04-17 18:47:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 3461 transitions. [2020-04-17 18:47:22,178 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 3461 transitions. Word has length 48 [2020-04-17 18:47:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:22,178 INFO L479 AbstractCegarLoop]: Abstraction has 1483 states and 3461 transitions. [2020-04-17 18:47:22,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-17 18:47:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 3461 transitions. [2020-04-17 18:47:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-17 18:47:22,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:22,183 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:47:22,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:22,389 INFO L427 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:22,389 INFO L82 PathProgramCache]: Analyzing trace with hash 6545759, now seen corresponding path program 4 times [2020-04-17 18:47:22,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:22,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690165236] [2020-04-17 18:47:22,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:23,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690165236] [2020-04-17 18:47:23,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780134251] [2020-04-17 18:47:23,965 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:24,064 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 18:47:24,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:24,066 INFO L264 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 97 conjunts are in the unsatisfiable core [2020-04-17 18:47:24,070 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:24,085 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:24,086 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 83 [2020-04-17 18:47:24,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:24,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:24,088 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-04-17 18:47:24,147 INFO L619 ElimStorePlain]: treesize reduction 167, result has 14.4 percent of original size [2020-04-17 18:47:24,147 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-17 18:47:24,148 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:8 [2020-04-17 18:47:24,324 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:47:24,324 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:24,333 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:24,334 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:24,334 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-17 18:47:24,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:47:24,610 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-04-17 18:47:24,611 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:24,626 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:24,627 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:24,628 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 18:47:24,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 18:47:24,861 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-04-17 18:47:24,862 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:24,875 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:24,875 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:24,876 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 18:47:24,971 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-04-17 18:47:24,972 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:24,981 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:24,982 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:24,983 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:29 [2020-04-17 18:47:25,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:25,709 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2020-04-17 18:47:25,710 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:25,715 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2020-04-17 18:47:25,715 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:25,735 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 18:47:25,735 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:25,736 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:92, output treesize:11 [2020-04-17 18:47:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:25,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:25,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25] total 56 [2020-04-17 18:47:25,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467525949] [2020-04-17 18:47:25,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-04-17 18:47:25,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-04-17 18:47:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3008, Unknown=0, NotChecked=0, Total=3306 [2020-04-17 18:47:25,840 INFO L87 Difference]: Start difference. First operand 1483 states and 3461 transitions. Second operand 58 states. [2020-04-17 18:47:29,157 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2020-04-17 18:47:32,692 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40 [2020-04-17 18:47:34,144 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-04-17 18:47:35,676 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-04-17 18:47:36,973 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-04-17 18:47:38,752 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2020-04-17 18:47:40,877 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-04-17 18:47:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:47:46,521 INFO L93 Difference]: Finished difference Result 5252 states and 11173 transitions. [2020-04-17 18:47:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-04-17 18:47:46,521 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 51 [2020-04-17 18:47:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:47:46,531 INFO L225 Difference]: With dead ends: 5252 [2020-04-17 18:47:46,531 INFO L226 Difference]: Without dead ends: 4804 [2020-04-17 18:47:46,536 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9542 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=3051, Invalid=26361, Unknown=0, NotChecked=0, Total=29412 [2020-04-17 18:47:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2020-04-17 18:47:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 1986. [2020-04-17 18:47:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2020-04-17 18:47:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 4564 transitions. [2020-04-17 18:47:46,588 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 4564 transitions. Word has length 51 [2020-04-17 18:47:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:47:46,589 INFO L479 AbstractCegarLoop]: Abstraction has 1986 states and 4564 transitions. [2020-04-17 18:47:46,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-04-17 18:47:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 4564 transitions. [2020-04-17 18:47:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-17 18:47:46,593 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:47:46,593 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:47:46,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:46,798 INFO L427 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:47:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:47:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash -227255969, now seen corresponding path program 5 times [2020-04-17 18:47:46,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:47:46,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588815149] [2020-04-17 18:47:46,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:47:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:47:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:47:47,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588815149] [2020-04-17 18:47:47,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513741547] [2020-04-17 18:47:47,386 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:47:47,504 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-17 18:47:47,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 18:47:47,507 INFO L264 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 64 conjunts are in the unsatisfiable core [2020-04-17 18:47:47,509 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 18:47:47,762 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-17 18:47:47,762 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:47,770 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:47,770 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:47,771 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2020-04-17 18:47:48,091 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:48,091 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 64 [2020-04-17 18:47:48,092 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:48,137 INFO L619 ElimStorePlain]: treesize reduction 24, result has 70.0 percent of original size [2020-04-17 18:47:48,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,152 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-04-17 18:47:48,152 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:48, output treesize:35 [2020-04-17 18:47:48,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,879 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:47:48,880 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 18:47:48,881 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2020-04-17 18:47:48,881 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 18:47:48,891 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 18:47:48,891 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2020-04-17 18:47:48,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 18:47:48,893 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:48,926 INFO L619 ElimStorePlain]: treesize reduction 54, result has 28.9 percent of original size [2020-04-17 18:47:48,927 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 18:47:48,927 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:116, output treesize:11 [2020-04-17 18:47:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:47:49,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 18:47:49,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2020-04-17 18:47:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138040834] [2020-04-17 18:47:49,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-04-17 18:47:49,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:47:49,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-04-17 18:47:49,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1887, Unknown=0, NotChecked=0, Total=2070 [2020-04-17 18:47:49,010 INFO L87 Difference]: Start difference. First operand 1986 states and 4564 transitions. Second operand 46 states. [2020-04-17 18:47:49,770 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-04-17 18:47:50,037 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-17 18:47:50,943 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-04-17 18:47:51,135 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-04-17 18:47:53,707 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2020-04-17 18:47:54,652 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-04-17 18:47:54,928 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-04-17 18:47:57,279 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 57 [2020-04-17 18:47:57,963 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-04-17 18:47:58,185 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-04-17 18:48:00,343 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 54 [2020-04-17 18:48:01,221 WARN L192 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-04-17 18:48:01,734 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-04-17 18:48:05,917 WARN L192 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-04-17 18:48:08,004 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 48 [2020-04-17 18:48:08,251 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 18:48:10,543 WARN L192 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-04-17 18:48:14,886 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-04-17 18:48:21,084 WARN L192 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-04-17 18:48:24,568 WARN L192 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-04-17 18:48:28,899 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 58 [2020-04-17 18:48:29,173 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-04-17 18:48:37,388 WARN L192 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 73 [2020-04-17 18:48:37,582 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-04-17 18:48:45,895 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 52 [2020-04-17 18:48:54,376 WARN L192 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 62 [2020-04-17 18:48:56,652 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-17 18:49:05,012 WARN L192 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 57 [2020-04-17 18:49:29,242 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-04-17 18:49:35,520 WARN L192 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-04-17 18:49:48,483 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-04-17 18:49:57,356 WARN L192 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-04-17 18:50:05,561 WARN L192 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-04-17 18:50:06,157 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-17 18:50:10,497 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-04-17 18:50:14,851 WARN L192 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-04-17 18:50:15,049 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-04-17 18:50:17,627 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-04-17 18:50:28,246 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-04-17 18:50:38,632 WARN L192 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 51 DAG size of output: 48 Received shutdown request... [2020-04-17 18:50:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-04-17 18:50:42,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 18:50:42,978 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 18:50:42,984 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 18:50:42,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:50:42 BasicIcfg [2020-04-17 18:50:42,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:50:42,986 INFO L168 Benchmark]: Toolchain (without parser) took 268389.93 ms. Allocated memory was 136.3 MB in the beginning and 609.7 MB in the end (delta: 473.4 MB). Free memory was 98.4 MB in the beginning and 456.8 MB in the end (delta: -358.3 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,987 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 136.3 MB. Free memory is still 118.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:50:42,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 912.74 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 128.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.27 ms. Allocated memory is still 200.3 MB. Free memory was 128.0 MB in the beginning and 125.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,987 INFO L168 Benchmark]: Boogie Preprocessor took 57.80 ms. Allocated memory is still 200.3 MB. Free memory was 125.8 MB in the beginning and 123.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,988 INFO L168 Benchmark]: RCFGBuilder took 635.55 ms. Allocated memory is still 200.3 MB. Free memory was 123.7 MB in the beginning and 91.3 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,988 INFO L168 Benchmark]: TraceAbstraction took 266688.15 ms. Allocated memory was 200.3 MB in the beginning and 609.7 MB in the end (delta: 409.5 MB). Free memory was 91.3 MB in the beginning and 456.8 MB in the end (delta: -365.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:50:42,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 136.3 MB. Free memory is still 118.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 912.74 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.4 MB in the beginning and 128.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.27 ms. Allocated memory is still 200.3 MB. Free memory was 128.0 MB in the beginning and 125.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.80 ms. Allocated memory is still 200.3 MB. Free memory was 125.8 MB in the beginning and 123.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 635.55 ms. Allocated memory is still 200.3 MB. Free memory was 123.7 MB in the beginning and 91.3 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 266688.15 ms. Allocated memory was 200.3 MB in the beginning and 609.7 MB in the end (delta: 409.5 MB). Free memory was 91.3 MB in the beginning and 456.8 MB in the end (delta: -365.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.3s, 133 ProgramPointsBefore, 40 ProgramPointsAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 3051 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 62 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 7699 CheckedPairsTotal, 118 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (1986states) and FLOYD_HOARE automaton (currently 90 states, 46 states before enhancement),while ReachableStatesComputation was computing reachable states (1119 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (1986states) and FLOYD_HOARE automaton (currently 90 states, 46 states before enhancement),while ReachableStatesComputation was computing reachable states (1119 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 127 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 266.5s, OverallIterations: 25, TraceHistogramMax: 7, AutomataDifference: 236.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 1549 SDtfs, 9364 SDslu, 19264 SDs, 0 SdLazy, 20081 SolverSat, 1776 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 88.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1528 GetRequests, 610 SyntacticMatches, 11 SemanticMatches, 907 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26750 ImplicationChecksByTransitivity, 157.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1986occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 12087 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 1479 NumberOfCodeBlocks, 1440 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 1435 ConstructedInterpolants, 171 QuantifiedInterpolants, 669735 SizeOfPredicates, 269 NumberOfNonLiveVariables, 4858 ConjunctsInSsa, 531 ConjunctsInUnsatCore, 44 InterpolantComputations, 10 PerfectInterpolantSequences, 226/1404 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