/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 23:01:56,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 23:01:56,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 23:01:56,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 23:01:56,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 23:01:56,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 23:01:56,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 23:01:56,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 23:01:56,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 23:01:56,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 23:01:56,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 23:01:56,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 23:01:56,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 23:01:56,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 23:01:56,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 23:01:56,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 23:01:56,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 23:01:56,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 23:01:56,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 23:01:56,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 23:01:56,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 23:01:56,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 23:01:56,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 23:01:56,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 23:01:56,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 23:01:56,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 23:01:56,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 23:01:56,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 23:01:56,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 23:01:56,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 23:01:56,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 23:01:56,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 23:01:56,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 23:01:56,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 23:01:56,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 23:01:56,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 23:01:56,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 23:01:56,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 23:01:56,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 23:01:56,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 23:01:56,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 23:01:56,370 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-VariableLbe.epf [2020-04-17 23:01:56,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 23:01:56,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 23:01:56,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 23:01:56,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 23:01:56,390 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 23:01:56,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 23:01:56,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 23:01:56,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 23:01:56,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 23:01:56,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 23:01:56,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 23:01:56,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 23:01:56,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 23:01:56,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 23:01:56,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 23:01:56,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 23:01:56,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 23:01:56,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 23:01:56,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 23:01:56,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 23:01:56,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 23:01:56,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 23:01:56,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 23:01:56,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 23:01:56,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 23:01:56,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 23:01:56,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 23:01:56,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-17 23:01:56,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 23:01:56,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 23:01:56,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 23:01:56,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 23:01:56,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 23:01:56,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 23:01:56,700 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 23:01:56,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-17 23:01:56,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9034757e3/fb2d6062af1d4a698cea075bc2f7817e/FLAG97ce47dd6 [2020-04-17 23:01:57,296 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 23:01:57,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-17 23:01:57,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9034757e3/fb2d6062af1d4a698cea075bc2f7817e/FLAG97ce47dd6 [2020-04-17 23:01:57,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9034757e3/fb2d6062af1d4a698cea075bc2f7817e [2020-04-17 23:01:57,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 23:01:57,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 23:01:57,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 23:01:57,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 23:01:57,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 23:01:57,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:01:57" (1/1) ... [2020-04-17 23:01:57,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:57, skipping insertion in model container [2020-04-17 23:01:57,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 11:01:57" (1/1) ... [2020-04-17 23:01:57,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 23:01:57,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 23:01:58,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:01:58,311 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 23:01:58,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 23:01:58,531 INFO L208 MainTranslator]: Completed translation [2020-04-17 23:01:58,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58 WrapperNode [2020-04-17 23:01:58,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 23:01:58,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 23:01:58,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 23:01:58,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 23:01:58,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 23:01:58,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 23:01:58,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 23:01:58,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 23:01:58,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (1/1) ... [2020-04-17 23:01:58,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 23:01:58,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 23:01:58,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 23:01:58,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 23:01:58,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (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 23:01:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-17 23:01:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-17 23:01:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-17 23:01:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-17 23:01:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 23:01:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 23:01:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 23:01:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 23:01:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-17 23:01:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 23:01:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 23:01:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 23:01:58,730 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 23:01:59,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 23:01:59,256 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-04-17 23:01:59,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:01:59 BoogieIcfgContainer [2020-04-17 23:01:59,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 23:01:59,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 23:01:59,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 23:01:59,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 23:01:59,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 11:01:57" (1/3) ... [2020-04-17 23:01:59,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f567c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:01:59, skipping insertion in model container [2020-04-17 23:01:59,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 11:01:58" (2/3) ... [2020-04-17 23:01:59,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f567c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 11:01:59, skipping insertion in model container [2020-04-17 23:01:59,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 11:01:59" (3/3) ... [2020-04-17 23:01:59,266 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-04-17 23:01:59,275 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 23:01:59,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 23:01:59,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 23:01:59,282 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 23:01:59,312 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,313 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,313 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,313 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,315 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,316 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,317 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,317 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,318 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,319 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,321 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,321 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,321 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,322 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,336 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,336 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,337 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,337 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,337 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,337 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,337 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,338 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,338 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,338 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,338 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,339 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,339 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,339 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,339 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,339 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,340 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,340 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,340 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,340 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,341 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,341 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,341 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,341 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,341 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,342 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,343 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,344 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,344 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,344 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,344 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,344 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,345 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,345 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,345 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,345 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,345 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,347 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,347 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,348 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,349 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,349 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,353 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,355 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,358 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,358 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,358 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,359 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,359 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,359 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,359 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,359 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,360 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,361 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,361 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,374 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,374 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,374 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,375 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,375 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,375 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,375 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,375 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,376 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,376 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,376 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,376 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,376 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,377 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,377 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,377 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,377 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,377 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 23:01:59,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 23:01:59,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 23:01:59,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 23:01:59,421 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 23:01:59,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 23:01:59,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 23:01:59,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 23:01:59,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 23:01:59,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 23:01:59,448 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 298 flow [2020-04-17 23:01:59,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-17 23:01:59,514 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-17 23:01:59,514 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 23:01:59,522 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 23:01:59,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-17 23:01:59,575 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-17 23:01:59,575 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-17 23:01:59,577 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 23:01:59,581 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-04-17 23:01:59,583 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-17 23:02:01,335 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 23:02:02,432 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-04-17 23:02:02,616 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-04-17 23:02:02,968 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-04-17 23:02:03,187 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-17 23:02:03,197 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7699 [2020-04-17 23:02:03,197 INFO L214 etLargeBlockEncoding]: Total number of compositions: 118 [2020-04-17 23:02:03,200 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-04-17 23:02:03,226 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-04-17 23:02:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-04-17 23:02:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 23:02:03,235 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:03,235 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 23:02:03,236 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 23:02:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:03,242 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 1 times [2020-04-17 23:02:03,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:03,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898861823] [2020-04-17 23:02:03,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:03,486 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 23:02:03,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898861823] [2020-04-17 23:02:03,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:03,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:02:03,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501545633] [2020-04-17 23:02:03,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:02:03,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:03,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:02:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:02:03,510 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-04-17 23:02:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:03,583 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-04-17 23:02:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:02:03,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 23:02:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:03,605 INFO L225 Difference]: With dead ends: 504 [2020-04-17 23:02:03,606 INFO L226 Difference]: Without dead ends: 460 [2020-04-17 23:02:03,607 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 23:02:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-04-17 23:02:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-04-17 23:02:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-17 23:02:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-04-17 23:02:03,725 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-04-17 23:02:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:03,725 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-04-17 23:02:03,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:02:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-04-17 23:02:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 23:02:03,727 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:03,727 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:03,727 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 23:02:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 1 times [2020-04-17 23:02:03,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:03,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985882095] [2020-04-17 23:02:03,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:03,830 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 23:02:03,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985882095] [2020-04-17 23:02:03,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:03,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 23:02:03,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096800811] [2020-04-17 23:02:03,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:02:03,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:03,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:02:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:02:03,832 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-04-17 23:02:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:03,849 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-04-17 23:02:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:02:03,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 23:02:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:03,855 INFO L225 Difference]: With dead ends: 464 [2020-04-17 23:02:03,855 INFO L226 Difference]: Without dead ends: 464 [2020-04-17 23:02:03,856 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 23:02:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-17 23:02:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-17 23:02:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-17 23:02:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-04-17 23:02:03,882 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-04-17 23:02:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:03,882 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-04-17 23:02:03,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:02:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-04-17 23:02:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 23:02:03,884 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:03,884 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:03,884 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 23:02:03,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:03,885 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 1 times [2020-04-17 23:02:03,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:03,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904451217] [2020-04-17 23:02:03,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:03,987 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 23:02:03,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904451217] [2020-04-17 23:02:03,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426720299] [2020-04-17 23:02:03,989 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 23:02:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:04,080 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-17 23:02:04,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:04,114 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 23:02:04,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:04,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-17 23:02:04,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596293085] [2020-04-17 23:02:04,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 23:02:04,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 23:02:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 23:02:04,116 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-04-17 23:02:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:04,240 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-04-17 23:02:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 23:02:04,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-17 23:02:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:04,247 INFO L225 Difference]: With dead ends: 866 [2020-04-17 23:02:04,247 INFO L226 Difference]: Without dead ends: 851 [2020-04-17 23:02:04,247 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 23:02:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-04-17 23:02:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-04-17 23:02:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-04-17 23:02:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-04-17 23:02:04,275 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-04-17 23:02:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:04,275 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-04-17 23:02:04,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 23:02:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-04-17 23:02:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 23:02:04,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:04,278 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:02:04,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:04,483 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 23:02:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 1 times [2020-04-17 23:02:04,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:04,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759325054] [2020-04-17 23:02:04,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:04,550 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 23:02:04,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759325054] [2020-04-17 23:02:04,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:04,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:02:04,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155085593] [2020-04-17 23:02:04,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:02:04,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:02:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:02:04,552 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-04-17 23:02:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:04,581 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-04-17 23:02:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:02:04,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 23:02:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:04,585 INFO L225 Difference]: With dead ends: 304 [2020-04-17 23:02:04,586 INFO L226 Difference]: Without dead ends: 304 [2020-04-17 23:02:04,587 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 23:02:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-17 23:02:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-04-17 23:02:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-17 23:02:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-04-17 23:02:04,596 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-04-17 23:02:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:04,597 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-04-17 23:02:04,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:02:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-04-17 23:02:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 23:02:04,606 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:04,606 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 23:02:04,606 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 23:02:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:04,606 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 1 times [2020-04-17 23:02:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:04,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144293619] [2020-04-17 23:02:04,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:04,663 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 23:02:04,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144293619] [2020-04-17 23:02:04,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:04,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 23:02:04,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331472289] [2020-04-17 23:02:04,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 23:02:04,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:04,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 23:02:04,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 23:02:04,666 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-04-17 23:02:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:04,696 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-04-17 23:02:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 23:02:04,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 23:02:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:04,700 INFO L225 Difference]: With dead ends: 372 [2020-04-17 23:02:04,700 INFO L226 Difference]: Without dead ends: 372 [2020-04-17 23:02:04,700 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 23:02:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-04-17 23:02:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-04-17 23:02:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-04-17 23:02:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-04-17 23:02:04,711 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-04-17 23:02:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:04,713 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-04-17 23:02:04,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 23:02:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-04-17 23:02:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 23:02:04,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:04,715 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-17 23:02:04,715 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 23:02:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 2 times [2020-04-17 23:02:04,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:04,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741193561] [2020-04-17 23:02:04,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:04,806 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 23:02:04,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741193561] [2020-04-17 23:02:04,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143104685] [2020-04-17 23:02:04,807 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 23:02:04,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:02:04,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:04,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 23:02:04,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:04,944 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 23:02:04,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:04,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-04-17 23:02:04,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264971076] [2020-04-17 23:02:04,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-17 23:02:04,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:04,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-17 23:02:04,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-17 23:02:04,946 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 10 states. [2020-04-17 23:02:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:05,107 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-04-17 23:02:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-17 23:02:05,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-04-17 23:02:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:05,111 INFO L225 Difference]: With dead ends: 542 [2020-04-17 23:02:05,111 INFO L226 Difference]: Without dead ends: 542 [2020-04-17 23:02:05,111 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 23:02:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-04-17 23:02:05,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-04-17 23:02:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-04-17 23:02:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-04-17 23:02:05,125 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-04-17 23:02:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:05,125 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-04-17 23:02:05,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-17 23:02:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-04-17 23:02:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 23:02:05,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:05,127 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 23:02:05,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:05,332 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 23:02:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:05,332 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 1 times [2020-04-17 23:02:05,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:05,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762833333] [2020-04-17 23:02:05,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:05,775 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 23:02:05,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762833333] [2020-04-17 23:02:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 23:02:05,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-17 23:02:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179261965] [2020-04-17 23:02:05,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-17 23:02:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:05,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-17 23:02:05,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-17 23:02:05,778 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 11 states. [2020-04-17 23:02:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:06,307 INFO L93 Difference]: Finished difference Result 643 states and 1378 transitions. [2020-04-17 23:02:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 23:02:06,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-04-17 23:02:06,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:06,311 INFO L225 Difference]: With dead ends: 643 [2020-04-17 23:02:06,312 INFO L226 Difference]: Without dead ends: 581 [2020-04-17 23:02:06,312 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-04-17 23:02:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-04-17 23:02:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 416. [2020-04-17 23:02:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-04-17 23:02:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 916 transitions. [2020-04-17 23:02:06,325 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 916 transitions. Word has length 21 [2020-04-17 23:02:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:06,326 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 916 transitions. [2020-04-17 23:02:06,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-17 23:02:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 916 transitions. [2020-04-17 23:02:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-17 23:02:06,327 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:06,327 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 23:02:06,327 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 23:02:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 1 times [2020-04-17 23:02:06,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:06,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931568046] [2020-04-17 23:02:06,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:06,390 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 23:02:06,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931568046] [2020-04-17 23:02:06,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679651298] [2020-04-17 23:02:06,391 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 23:02:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:06,514 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-17 23:02:06,516 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:06,532 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 23:02:06,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 23:02:06,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-04-17 23:02:06,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862432621] [2020-04-17 23:02:06,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 23:02:06,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:06,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 23:02:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-17 23:02:06,535 INFO L87 Difference]: Start difference. First operand 416 states and 916 transitions. Second operand 6 states. [2020-04-17 23:02:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:06,608 INFO L93 Difference]: Finished difference Result 576 states and 1231 transitions. [2020-04-17 23:02:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 23:02:06,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-04-17 23:02:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:06,613 INFO L225 Difference]: With dead ends: 576 [2020-04-17 23:02:06,613 INFO L226 Difference]: Without dead ends: 566 [2020-04-17 23:02:06,613 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 23:02:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-04-17 23:02:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 476. [2020-04-17 23:02:06,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-04-17 23:02:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1042 transitions. [2020-04-17 23:02:06,627 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1042 transitions. Word has length 24 [2020-04-17 23:02:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:06,627 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 1042 transitions. [2020-04-17 23:02:06,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 23:02:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1042 transitions. [2020-04-17 23:02:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-17 23:02:06,629 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:06,629 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-04-17 23:02:06,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:06,833 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 23:02:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:06,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 3 times [2020-04-17 23:02:06,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:06,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652893881] [2020-04-17 23:02:06,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:06,964 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 23:02:06,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652893881] [2020-04-17 23:02:06,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381464533] [2020-04-17 23:02:06,965 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 23:02:07,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-17 23:02:07,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:07,067 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-17 23:02:07,069 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:07,099 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 23:02:07,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:07,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-04-17 23:02:07,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877981495] [2020-04-17 23:02:07,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 23:02:07,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:07,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 23:02:07,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-04-17 23:02:07,101 INFO L87 Difference]: Start difference. First operand 476 states and 1042 transitions. Second operand 13 states. [2020-04-17 23:02:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:07,272 INFO L93 Difference]: Finished difference Result 789 states and 1669 transitions. [2020-04-17 23:02:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-17 23:02:07,272 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-04-17 23:02:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:07,280 INFO L225 Difference]: With dead ends: 789 [2020-04-17 23:02:07,280 INFO L226 Difference]: Without dead ends: 789 [2020-04-17 23:02:07,281 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-04-17 23:02:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-04-17 23:02:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 553. [2020-04-17 23:02:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-04-17 23:02:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1211 transitions. [2020-04-17 23:02:07,297 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1211 transitions. Word has length 27 [2020-04-17 23:02:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:07,298 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 1211 transitions. [2020-04-17 23:02:07,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 23:02:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1211 transitions. [2020-04-17 23:02:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-17 23:02:07,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:07,300 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 23:02:07,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:07,512 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 23:02:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:07,513 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 2 times [2020-04-17 23:02:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:07,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643913469] [2020-04-17 23:02:07,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:02:08,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643913469] [2020-04-17 23:02:08,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700464639] [2020-04-17 23:02:08,012 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 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 23:02:08,090 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-17 23:02:08,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:08,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 48 conjunts are in the unsatisfiable core [2020-04-17 23:02:08,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:08,180 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:08,181 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 485 treesize of output 481 [2020-04-17 23:02:08,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:08,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:08,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:08,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:08,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:08,200 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:08,361 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 24 [2020-04-17 23:02:08,361 INFO L619 ElimStorePlain]: treesize reduction 2396, result has 1.2 percent of original size [2020-04-17 23:02:08,363 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 23:02:08,363 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:4 [2020-04-17 23:02:08,580 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 23:02:08,580 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:08,588 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:08,589 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 23:02:08,589 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-17 23:02:08,773 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 23:02:08,773 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:08,782 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:08,783 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 23:02:08,784 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-17 23:02:09,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:09,134 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 23:02:09,135 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:09,142 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 23:02:09,144 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:09,164 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:02:09,165 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 23:02:09,165 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-17 23:02:09,227 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 23:02:09,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 23:02:09,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 27 [2020-04-17 23:02:09,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113328715] [2020-04-17 23:02:09,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 23:02:09,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:09,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 23:02:09,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2020-04-17 23:02:09,230 INFO L87 Difference]: Start difference. First operand 553 states and 1211 transitions. Second operand 15 states. [2020-04-17 23:02:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:13,755 INFO L93 Difference]: Finished difference Result 1207 states and 2573 transitions. [2020-04-17 23:02:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-17 23:02:13,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-04-17 23:02:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:13,762 INFO L225 Difference]: With dead ends: 1207 [2020-04-17 23:02:13,763 INFO L226 Difference]: Without dead ends: 1167 [2020-04-17 23:02:13,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=386, Invalid=2806, Unknown=0, NotChecked=0, Total=3192 [2020-04-17 23:02:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-04-17 23:02:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 657. [2020-04-17 23:02:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-04-17 23:02:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1465 transitions. [2020-04-17 23:02:13,791 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1465 transitions. Word has length 28 [2020-04-17 23:02:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:13,791 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 1465 transitions. [2020-04-17 23:02:13,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 23:02:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1465 transitions. [2020-04-17 23:02:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-17 23:02:13,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:13,793 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 23:02:13,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:13,997 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 23:02:13,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 2 times [2020-04-17 23:02:13,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:14,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936811327] [2020-04-17 23:02:14,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:14,098 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 23:02:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936811327] [2020-04-17 23:02:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304167829] [2020-04-17 23:02:14,099 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 23:02:14,207 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:02:14,207 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:14,209 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-17 23:02:14,215 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:14,249 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 23:02:14,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:14,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-04-17 23:02:14,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579675089] [2020-04-17 23:02:14,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-17 23:02:14,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:14,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-17 23:02:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-04-17 23:02:14,254 INFO L87 Difference]: Start difference. First operand 657 states and 1465 transitions. Second operand 11 states. [2020-04-17 23:02:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:14,457 INFO L93 Difference]: Finished difference Result 1031 states and 2213 transitions. [2020-04-17 23:02:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-17 23:02:14,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-04-17 23:02:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:14,464 INFO L225 Difference]: With dead ends: 1031 [2020-04-17 23:02:14,464 INFO L226 Difference]: Without dead ends: 1031 [2020-04-17 23:02:14,465 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 23:02:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-04-17 23:02:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 701. [2020-04-17 23:02:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-04-17 23:02:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1589 transitions. [2020-04-17 23:02:14,491 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1589 transitions. Word has length 31 [2020-04-17 23:02:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:14,492 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1589 transitions. [2020-04-17 23:02:14,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-17 23:02:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1589 transitions. [2020-04-17 23:02:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-17 23:02:14,493 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:14,494 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-04-17 23:02:14,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:14,707 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 23:02:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 4 times [2020-04-17 23:02:14,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:14,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063692021] [2020-04-17 23:02:14,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:14,894 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 23:02:14,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063692021] [2020-04-17 23:02:14,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792009552] [2020-04-17 23:02:14,895 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 23:02:14,985 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:02:14,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:14,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-17 23:02:14,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:15,027 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 23:02:15,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:15,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2020-04-17 23:02:15,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804666633] [2020-04-17 23:02:15,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 23:02:15,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:15,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 23:02:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-04-17 23:02:15,029 INFO L87 Difference]: Start difference. First operand 701 states and 1589 transitions. Second operand 16 states. [2020-04-17 23:02:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:15,236 INFO L93 Difference]: Finished difference Result 1183 states and 2570 transitions. [2020-04-17 23:02:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 23:02:15,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-04-17 23:02:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:15,243 INFO L225 Difference]: With dead ends: 1183 [2020-04-17 23:02:15,243 INFO L226 Difference]: Without dead ends: 1183 [2020-04-17 23:02:15,244 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-17 23:02:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-04-17 23:02:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 792. [2020-04-17 23:02:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-04-17 23:02:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1797 transitions. [2020-04-17 23:02:15,267 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1797 transitions. Word has length 34 [2020-04-17 23:02:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:15,268 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1797 transitions. [2020-04-17 23:02:15,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 23:02:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1797 transitions. [2020-04-17 23:02:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-17 23:02:15,270 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:15,270 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 23:02:15,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:15,474 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 23:02:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 1 times [2020-04-17 23:02:15,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:15,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720870489] [2020-04-17 23:02:15,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:16,798 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 23:02:16,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720870489] [2020-04-17 23:02:16,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016199665] [2020-04-17 23:02:16,799 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 23:02:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:16,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 81 conjunts are in the unsatisfiable core [2020-04-17 23:02:16,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:16,915 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:16,915 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 619 treesize of output 593 [2020-04-17 23:02:16,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:16,927 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-04-17 23:02:17,129 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 29 [2020-04-17 23:02:17,130 INFO L619 ElimStorePlain]: treesize reduction 1521, result has 2.1 percent of original size [2020-04-17 23:02:17,131 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 23:02:17,131 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:8 [2020-04-17 23:02:17,303 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 23:02:17,303 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:17,312 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:17,313 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 23:02:17,313 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-17 23:02:17,574 INFO L343 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-04-17 23:02:17,574 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 1 case distinctions, treesize of input 30 treesize of output 29 [2020-04-17 23:02:17,575 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:17,586 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:17,586 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 23:02:17,587 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:27 [2020-04-17 23:02:17,697 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 23:02:17,698 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:17,710 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:17,711 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 23:02:17,712 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:29 [2020-04-17 23:02:18,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:18,290 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 23:02:18,291 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:18,294 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 23:02:18,294 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:18,332 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:02:18,333 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 23:02:18,334 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:92, output treesize:11 [2020-04-17 23:02:18,452 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 23:02:18,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:18,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 43 [2020-04-17 23:02:18,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489383301] [2020-04-17 23:02:18,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-04-17 23:02:18,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:18,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-04-17 23:02:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2020-04-17 23:02:18,455 INFO L87 Difference]: Start difference. First operand 792 states and 1797 transitions. Second operand 45 states. [2020-04-17 23:02:19,709 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 23 [2020-04-17 23:02:21,053 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-04-17 23:02:21,322 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2020-04-17 23:02:21,473 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2020-04-17 23:02:21,869 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2020-04-17 23:02:22,106 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-04-17 23:02:22,500 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-04-17 23:02:22,922 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 33 [2020-04-17 23:02:23,369 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-04-17 23:02:24,486 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-04-17 23:02:25,791 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-04-17 23:02:26,208 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-04-17 23:02:27,979 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2020-04-17 23:02:28,310 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-04-17 23:02:29,346 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-04-17 23:02:30,026 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-04-17 23:02:30,189 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-04-17 23:02:30,428 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-04-17 23:02:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:30,466 INFO L93 Difference]: Finished difference Result 2455 states and 5232 transitions. [2020-04-17 23:02:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-04-17 23:02:30,466 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 36 [2020-04-17 23:02:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:30,478 INFO L225 Difference]: With dead ends: 2455 [2020-04-17 23:02:30,478 INFO L226 Difference]: Without dead ends: 2152 [2020-04-17 23:02:30,481 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3250 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1325, Invalid=10231, Unknown=0, NotChecked=0, Total=11556 [2020-04-17 23:02:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-04-17 23:02:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1087. [2020-04-17 23:02:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-04-17 23:02:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2494 transitions. [2020-04-17 23:02:30,515 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2494 transitions. Word has length 36 [2020-04-17 23:02:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:30,515 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 2494 transitions. [2020-04-17 23:02:30,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-04-17 23:02:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2494 transitions. [2020-04-17 23:02:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-17 23:02:30,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:30,518 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 23:02:30,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:30,723 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 23:02:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash 460075742, now seen corresponding path program 2 times [2020-04-17 23:02:30,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:30,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138723748] [2020-04-17 23:02:30,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:31,551 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 23:02:31,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138723748] [2020-04-17 23:02:31,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331510540] [2020-04-17 23:02:31,552 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 23:02:31,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-17 23:02:31,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:31,632 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2020-04-17 23:02:31,634 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:31,751 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 23:02:31,752 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:31,758 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:31,758 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 23:02:31,759 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-04-17 23:02:32,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:32,355 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 53 treesize of output 21 [2020-04-17 23:02:32,356 INFO L539 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 23:02:32,359 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 56 treesize of output 24 [2020-04-17 23:02:32,360 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 23:02:32,377 INFO L619 ElimStorePlain]: treesize reduction 30, result has 34.8 percent of original size [2020-04-17 23:02:32,377 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 23:02:32,378 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:110, output treesize:16 [2020-04-17 23:02:32,423 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 23:02:32,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 23:02:32,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 25 [2020-04-17 23:02:32,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942492639] [2020-04-17 23:02:32,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 23:02:32,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 23:02:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-04-17 23:02:32,424 INFO L87 Difference]: Start difference. First operand 1087 states and 2494 transitions. Second operand 13 states. [2020-04-17 23:02:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:35,723 INFO L93 Difference]: Finished difference Result 1602 states and 3558 transitions. [2020-04-17 23:02:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-17 23:02:35,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-04-17 23:02:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:35,730 INFO L225 Difference]: With dead ends: 1602 [2020-04-17 23:02:35,730 INFO L226 Difference]: Without dead ends: 1562 [2020-04-17 23:02:35,731 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=324, Invalid=1932, Unknown=0, NotChecked=0, Total=2256 [2020-04-17 23:02:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-04-17 23:02:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 885. [2020-04-17 23:02:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-04-17 23:02:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1981 transitions. [2020-04-17 23:02:35,755 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1981 transitions. Word has length 36 [2020-04-17 23:02:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:35,755 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1981 transitions. [2020-04-17 23:02:35,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 23:02:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1981 transitions. [2020-04-17 23:02:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-17 23:02:35,757 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:35,758 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 23:02:35,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:35,969 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 23:02:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1085658049, now seen corresponding path program 3 times [2020-04-17 23:02:35,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:35,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392217170] [2020-04-17 23:02:35,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:36,087 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 23:02:36,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392217170] [2020-04-17 23:02:36,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540346999] [2020-04-17 23:02:36,088 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 23:02:36,185 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 23:02:36,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:36,186 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-17 23:02:36,194 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:36,252 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 23:02:36,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-17 23:02:36,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-04-17 23:02:36,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961318205] [2020-04-17 23:02:36,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 23:02:36,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:36,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 23:02:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-04-17 23:02:36,254 INFO L87 Difference]: Start difference. First operand 885 states and 1981 transitions. Second operand 6 states. [2020-04-17 23:02:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:36,367 INFO L93 Difference]: Finished difference Result 1185 states and 2579 transitions. [2020-04-17 23:02:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 23:02:36,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-17 23:02:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:36,373 INFO L225 Difference]: With dead ends: 1185 [2020-04-17 23:02:36,373 INFO L226 Difference]: Without dead ends: 1185 [2020-04-17 23:02:36,373 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 23:02:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-04-17 23:02:36,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 899. [2020-04-17 23:02:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-04-17 23:02:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 2022 transitions. [2020-04-17 23:02:36,393 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 2022 transitions. Word has length 38 [2020-04-17 23:02:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:36,394 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 2022 transitions. [2020-04-17 23:02:36,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 23:02:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 2022 transitions. [2020-04-17 23:02:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-17 23:02:36,396 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:36,396 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 23:02:36,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:36,600 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 23:02:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:36,600 INFO L82 PathProgramCache]: Analyzing trace with hash -448635967, now seen corresponding path program 4 times [2020-04-17 23:02:36,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:36,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550435226] [2020-04-17 23:02:36,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:36,713 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 23:02:36,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550435226] [2020-04-17 23:02:36,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016961193] [2020-04-17 23:02:36,714 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 23:02:36,808 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:02:36,808 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:36,809 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-17 23:02:36,811 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:36,818 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 23:02:36,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:36,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 11 [2020-04-17 23:02:36,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104821783] [2020-04-17 23:02:36,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 23:02:36,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:36,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 23:02:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-04-17 23:02:36,820 INFO L87 Difference]: Start difference. First operand 899 states and 2022 transitions. Second operand 12 states. [2020-04-17 23:02:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:36,990 INFO L93 Difference]: Finished difference Result 1262 states and 2726 transitions. [2020-04-17 23:02:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-17 23:02:36,991 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-04-17 23:02:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:36,997 INFO L225 Difference]: With dead ends: 1262 [2020-04-17 23:02:36,997 INFO L226 Difference]: Without dead ends: 1262 [2020-04-17 23:02:36,997 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:02:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-04-17 23:02:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 899. [2020-04-17 23:02:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-04-17 23:02:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 2022 transitions. [2020-04-17 23:02:37,019 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 2022 transitions. Word has length 38 [2020-04-17 23:02:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:37,019 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 2022 transitions. [2020-04-17 23:02:37,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 23:02:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 2022 transitions. [2020-04-17 23:02:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-17 23:02:37,021 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:37,022 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-04-17 23:02:37,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:37,226 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 23:02:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:37,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1774953421, now seen corresponding path program 5 times [2020-04-17 23:02:37,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:37,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920950206] [2020-04-17 23:02:37,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:37,385 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 23:02:37,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920950206] [2020-04-17 23:02:37,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669764300] [2020-04-17 23:02:37,385 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 23:02:37,491 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-04-17 23:02:37,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:37,492 INFO L264 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 23:02:37,494 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:37,531 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 23:02:37,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:37,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2020-04-17 23:02:37,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190212064] [2020-04-17 23:02:37,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-17 23:02:37,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:37,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-17 23:02:37,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-04-17 23:02:37,533 INFO L87 Difference]: Start difference. First operand 899 states and 2022 transitions. Second operand 19 states. [2020-04-17 23:02:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:37,803 INFO L93 Difference]: Finished difference Result 1345 states and 2911 transitions. [2020-04-17 23:02:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-17 23:02:37,803 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-04-17 23:02:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:37,810 INFO L225 Difference]: With dead ends: 1345 [2020-04-17 23:02:37,810 INFO L226 Difference]: Without dead ends: 1345 [2020-04-17 23:02:37,811 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 23:02:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-04-17 23:02:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 976. [2020-04-17 23:02:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-04-17 23:02:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2191 transitions. [2020-04-17 23:02:37,830 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2191 transitions. Word has length 41 [2020-04-17 23:02:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:37,831 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 2191 transitions. [2020-04-17 23:02:37,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-17 23:02:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2191 transitions. [2020-04-17 23:02:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-17 23:02:37,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:37,833 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 23:02:38,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:38,037 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 23:02:38,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:38,038 INFO L82 PathProgramCache]: Analyzing trace with hash 223818986, now seen corresponding path program 3 times [2020-04-17 23:02:38,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:38,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832484260] [2020-04-17 23:02:38,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:02:38,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832484260] [2020-04-17 23:02:38,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505282500] [2020-04-17 23:02:38,850 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 23:02:38,957 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-17 23:02:38,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:38,959 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 67 conjunts are in the unsatisfiable core [2020-04-17 23:02:38,961 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:38,971 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2020-04-17 23:02:38,971 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 23:02:39,003 INFO L619 ElimStorePlain]: treesize reduction 29, result has 42.0 percent of original size [2020-04-17 23:02:39,004 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 23:02:39,004 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-04-17 23:02:39,168 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 23:02:39,168 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:39,175 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:39,176 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 23:02:39,176 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-17 23:02:39,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:02:39,653 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 23:02:39,654 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:39,668 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:39,669 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 23:02:39,670 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:24 [2020-04-17 23:02:39,824 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 23:02:39,824 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:39,833 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:39,834 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 23:02:39,834 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-17 23:02:40,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:40,381 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 23:02:40,382 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:40,386 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 23:02:40,387 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:40,407 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:02:40,408 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 23:02:40,408 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-17 23:02:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:02:40,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:40,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 42 [2020-04-17 23:02:40,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627752166] [2020-04-17 23:02:40,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-04-17 23:02:40,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:40,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-04-17 23:02:40,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2020-04-17 23:02:40,492 INFO L87 Difference]: Start difference. First operand 976 states and 2191 transitions. Second operand 44 states. [2020-04-17 23:02:41,626 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-04-17 23:02:42,110 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-04-17 23:02:42,401 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 23:02:42,974 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-04-17 23:02:44,556 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2020-04-17 23:02:44,779 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-04-17 23:02:45,016 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-04-17 23:02:45,272 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-04-17 23:02:45,832 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2020-04-17 23:02:46,239 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2020-04-17 23:02:47,070 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-04-17 23:02:47,374 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-04-17 23:02:47,628 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2020-04-17 23:02:48,145 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2020-04-17 23:02:48,352 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-04-17 23:02:51,609 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-04-17 23:02:52,464 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-04-17 23:02:52,833 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-04-17 23:02:53,413 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2020-04-17 23:02:53,638 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-04-17 23:02:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:53,685 INFO L93 Difference]: Finished difference Result 3752 states and 8024 transitions. [2020-04-17 23:02:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-04-17 23:02:53,685 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2020-04-17 23:02:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:53,702 INFO L225 Difference]: With dead ends: 3752 [2020-04-17 23:02:53,702 INFO L226 Difference]: Without dead ends: 3752 [2020-04-17 23:02:53,706 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1910, Invalid=9862, Unknown=0, NotChecked=0, Total=11772 [2020-04-17 23:02:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2020-04-17 23:02:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1142. [2020-04-17 23:02:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-04-17 23:02:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 2590 transitions. [2020-04-17 23:02:53,741 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 2590 transitions. Word has length 43 [2020-04-17 23:02:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:53,741 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 2590 transitions. [2020-04-17 23:02:53,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-04-17 23:02:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 2590 transitions. [2020-04-17 23:02:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 23:02:53,744 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:53,744 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 23:02:53,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:53,948 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 23:02:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:53,948 INFO L82 PathProgramCache]: Analyzing trace with hash 141888205, now seen corresponding path program 5 times [2020-04-17 23:02:53,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:53,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488080] [2020-04-17 23:02:53,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:02:54,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488080] [2020-04-17 23:02:54,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725438233] [2020-04-17 23:02:54,078 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 23:02:54,200 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-04-17 23:02:54,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:54,202 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 23:02:54,203 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:54,229 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 23:02:54,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:54,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 14 [2020-04-17 23:02:54,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090828323] [2020-04-17 23:02:54,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 23:02:54,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:54,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 23:02:54,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-04-17 23:02:54,230 INFO L87 Difference]: Start difference. First operand 1142 states and 2590 transitions. Second operand 15 states. [2020-04-17 23:02:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:54,469 INFO L93 Difference]: Finished difference Result 1717 states and 3752 transitions. [2020-04-17 23:02:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 23:02:54,469 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-17 23:02:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:54,475 INFO L225 Difference]: With dead ends: 1717 [2020-04-17 23:02:54,475 INFO L226 Difference]: Without dead ends: 1717 [2020-04-17 23:02:54,476 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:02:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-04-17 23:02:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1142. [2020-04-17 23:02:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-04-17 23:02:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 2590 transitions. [2020-04-17 23:02:54,503 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 2590 transitions. Word has length 45 [2020-04-17 23:02:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:54,503 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 2590 transitions. [2020-04-17 23:02:54,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 23:02:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 2590 transitions. [2020-04-17 23:02:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 23:02:54,522 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:54,522 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 23:02:54,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:54,727 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 23:02:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1872502873, now seen corresponding path program 6 times [2020-04-17 23:02:54,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:54,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751658201] [2020-04-17 23:02:54,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:02:54,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751658201] [2020-04-17 23:02:54,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363584516] [2020-04-17 23:02:54,870 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 23:02:55,031 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-04-17 23:02:55,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:55,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 23:02:55,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:55,071 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 23:02:55,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:55,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 14 [2020-04-17 23:02:55,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595767985] [2020-04-17 23:02:55,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 23:02:55,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 23:02:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-04-17 23:02:55,073 INFO L87 Difference]: Start difference. First operand 1142 states and 2590 transitions. Second operand 15 states. [2020-04-17 23:02:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:55,280 INFO L93 Difference]: Finished difference Result 1710 states and 3750 transitions. [2020-04-17 23:02:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 23:02:55,280 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-17 23:02:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:55,284 INFO L225 Difference]: With dead ends: 1710 [2020-04-17 23:02:55,285 INFO L226 Difference]: Without dead ends: 1710 [2020-04-17 23:02:55,285 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-04-17 23:02:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-04-17 23:02:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1216. [2020-04-17 23:02:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-04-17 23:02:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 2799 transitions. [2020-04-17 23:02:55,310 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 2799 transitions. Word has length 45 [2020-04-17 23:02:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:55,310 INFO L479 AbstractCegarLoop]: Abstraction has 1216 states and 2799 transitions. [2020-04-17 23:02:55,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 23:02:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 2799 transitions. [2020-04-17 23:02:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-17 23:02:55,313 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:55,313 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 23:02:55,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:55,518 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 23:02:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1181218125, now seen corresponding path program 7 times [2020-04-17 23:02:55,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:55,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119129474] [2020-04-17 23:02:55,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:55,671 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 23:02:55,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119129474] [2020-04-17 23:02:55,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964966257] [2020-04-17 23:02:55,672 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 23:02:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:55,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-17 23:02:55,762 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:55,766 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 23:02:55,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:55,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 14 [2020-04-17 23:02:55,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284344176] [2020-04-17 23:02:55,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-17 23:02:55,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:55,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-17 23:02:55,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-17 23:02:55,770 INFO L87 Difference]: Start difference. First operand 1216 states and 2799 transitions. Second operand 15 states. [2020-04-17 23:02:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:56,059 INFO L93 Difference]: Finished difference Result 1586 states and 3544 transitions. [2020-04-17 23:02:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 23:02:56,060 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-17 23:02:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:56,065 INFO L225 Difference]: With dead ends: 1586 [2020-04-17 23:02:56,066 INFO L226 Difference]: Without dead ends: 1586 [2020-04-17 23:02:56,066 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-04-17 23:02:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-04-17 23:02:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1230. [2020-04-17 23:02:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-04-17 23:02:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2836 transitions. [2020-04-17 23:02:56,100 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2836 transitions. Word has length 45 [2020-04-17 23:02:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:56,100 INFO L479 AbstractCegarLoop]: Abstraction has 1230 states and 2836 transitions. [2020-04-17 23:02:56,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-17 23:02:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2836 transitions. [2020-04-17 23:02:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-17 23:02:56,103 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:56,104 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2020-04-17 23:02:56,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:56,309 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 23:02:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:56,309 INFO L82 PathProgramCache]: Analyzing trace with hash 190021147, now seen corresponding path program 6 times [2020-04-17 23:02:56,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:56,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511277718] [2020-04-17 23:02:56,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:56,501 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 23:02:56,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511277718] [2020-04-17 23:02:56,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090095849] [2020-04-17 23:02:56,502 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 23:02:56,646 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-04-17 23:02:56,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:56,648 INFO L264 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:02:56,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:56,668 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 23:02:56,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:02:56,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 21 [2020-04-17 23:02:56,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563457825] [2020-04-17 23:02:56,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-17 23:02:56,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:02:56,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-17 23:02:56,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-17 23:02:56,670 INFO L87 Difference]: Start difference. First operand 1230 states and 2836 transitions. Second operand 22 states. [2020-04-17 23:02:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:02:56,907 INFO L93 Difference]: Finished difference Result 1757 states and 3893 transitions. [2020-04-17 23:02:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 23:02:56,907 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2020-04-17 23:02:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:02:56,911 INFO L225 Difference]: With dead ends: 1757 [2020-04-17 23:02:56,912 INFO L226 Difference]: Without dead ends: 1757 [2020-04-17 23:02:56,912 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 23:02:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-04-17 23:02:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1307. [2020-04-17 23:02:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-04-17 23:02:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 3005 transitions. [2020-04-17 23:02:56,937 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 3005 transitions. Word has length 48 [2020-04-17 23:02:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:02:56,937 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 3005 transitions. [2020-04-17 23:02:56,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-17 23:02:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 3005 transitions. [2020-04-17 23:02:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-17 23:02:56,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:02:56,940 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 23:02:57,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:02:57,153 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 23:02:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:02:57,153 INFO L82 PathProgramCache]: Analyzing trace with hash 6545759, now seen corresponding path program 4 times [2020-04-17 23:02:57,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:02:57,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876591939] [2020-04-17 23:02:57,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:02:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:02:58,372 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 23:02:58,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876591939] [2020-04-17 23:02:58,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386207260] [2020-04-17 23:02:58,372 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 23:02:58,526 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:02:58,527 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:02:58,529 INFO L264 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 97 conjunts are in the unsatisfiable core [2020-04-17 23:02:58,532 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:02:58,558 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:58,559 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 87 treesize of output 91 [2020-04-17 23:02:58,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:58,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:58,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:02:58,561 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 23:02:58,623 INFO L619 ElimStorePlain]: treesize reduction 153, result has 17.3 percent of original size [2020-04-17 23:02:58,624 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 23:02:58,624 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:8 [2020-04-17 23:02:58,846 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 23:02:58,846 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:58,855 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:58,856 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 23:02:58,856 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-17 23:02:59,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:02:59,174 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 23:02:59,174 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:59,189 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:59,189 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 23:02:59,190 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 23:02:59,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:02:59,459 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 23:02:59,460 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:59,495 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:59,496 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 23:02:59,497 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:22 [2020-04-17 23:02:59,618 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 23:02:59,618 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:02:59,629 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:02:59,630 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 23:02:59,630 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:29 [2020-04-17 23:03:00,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:00,593 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 23:03:00,594 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:00,597 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 23:03:00,597 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:00,617 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:03:00,618 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 23:03:00,618 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:92, output treesize:11 [2020-04-17 23:03:00,740 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 23:03:00,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:00,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 25] total 57 [2020-04-17 23:03:00,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090452966] [2020-04-17 23:03:00,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-04-17 23:03:00,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:00,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-04-17 23:03:00,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3258, Unknown=0, NotChecked=0, Total=3422 [2020-04-17 23:03:00,742 INFO L87 Difference]: Start difference. First operand 1307 states and 3005 transitions. Second operand 59 states. [2020-04-17 23:03:01,656 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-04-17 23:03:02,134 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-04-17 23:03:04,176 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-04-17 23:03:04,435 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-04-17 23:03:05,075 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2020-04-17 23:03:05,348 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-04-17 23:03:06,123 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-04-17 23:03:06,695 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-04-17 23:03:07,734 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-04-17 23:03:08,497 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-04-17 23:03:09,312 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2020-04-17 23:03:10,877 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-04-17 23:03:12,773 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-04-17 23:03:13,033 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-04-17 23:03:13,759 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-04-17 23:03:14,024 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-04-17 23:03:14,515 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2020-04-17 23:03:14,899 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-04-17 23:03:15,907 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-04-17 23:03:17,419 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-04-17 23:03:18,081 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-04-17 23:03:19,105 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-04-17 23:03:19,827 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-04-17 23:03:22,221 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-04-17 23:03:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:26,840 INFO L93 Difference]: Finished difference Result 7086 states and 15085 transitions. [2020-04-17 23:03:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2020-04-17 23:03:26,841 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 51 [2020-04-17 23:03:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:26,856 INFO L225 Difference]: With dead ends: 7086 [2020-04-17 23:03:26,857 INFO L226 Difference]: Without dead ends: 6779 [2020-04-17 23:03:26,863 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11720 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2656, Invalid=34016, Unknown=0, NotChecked=0, Total=36672 [2020-04-17 23:03:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2020-04-17 23:03:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 2314. [2020-04-17 23:03:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2314 states. [2020-04-17 23:03:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 5545 transitions. [2020-04-17 23:03:26,941 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 5545 transitions. Word has length 51 [2020-04-17 23:03:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:26,941 INFO L479 AbstractCegarLoop]: Abstraction has 2314 states and 5545 transitions. [2020-04-17 23:03:26,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-04-17 23:03:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 5545 transitions. [2020-04-17 23:03:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-17 23:03:26,946 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:26,947 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:27,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:27,151 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 23:03:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1277101899, now seen corresponding path program 8 times [2020-04-17 23:03:27,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:27,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682696466] [2020-04-17 23:03:27,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:03:27,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682696466] [2020-04-17 23:03:27,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781613242] [2020-04-17 23:03:27,322 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 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 23:03:27,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:03:27,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:27,422 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:03:27,423 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:03:27,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:27,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 17 [2020-04-17 23:03:27,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276118377] [2020-04-17 23:03:27,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-17 23:03:27,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:27,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-17 23:03:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:03:27,455 INFO L87 Difference]: Start difference. First operand 2314 states and 5545 transitions. Second operand 18 states. [2020-04-17 23:03:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:27,712 INFO L93 Difference]: Finished difference Result 3187 states and 7282 transitions. [2020-04-17 23:03:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-17 23:03:27,713 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-04-17 23:03:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:27,718 INFO L225 Difference]: With dead ends: 3187 [2020-04-17 23:03:27,718 INFO L226 Difference]: Without dead ends: 3187 [2020-04-17 23:03:27,719 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2020-04-17 23:03:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2020-04-17 23:03:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 2314. [2020-04-17 23:03:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2314 states. [2020-04-17 23:03:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 5545 transitions. [2020-04-17 23:03:27,759 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 5545 transitions. Word has length 52 [2020-04-17 23:03:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:27,759 INFO L479 AbstractCegarLoop]: Abstraction has 2314 states and 5545 transitions. [2020-04-17 23:03:27,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-17 23:03:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 5545 transitions. [2020-04-17 23:03:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-17 23:03:27,764 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:27,764 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:27,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:27,968 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 23:03:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 453512769, now seen corresponding path program 9 times [2020-04-17 23:03:27,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:27,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198128205] [2020-04-17 23:03:27,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:03:28,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198128205] [2020-04-17 23:03:28,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381916097] [2020-04-17 23:03:28,155 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:28,317 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-04-17 23:03:28,317 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:28,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:03:28,320 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:03:28,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:28,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 17 [2020-04-17 23:03:28,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553417852] [2020-04-17 23:03:28,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-17 23:03:28,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:28,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-17 23:03:28,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:03:28,353 INFO L87 Difference]: Start difference. First operand 2314 states and 5545 transitions. Second operand 18 states. [2020-04-17 23:03:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:28,644 INFO L93 Difference]: Finished difference Result 3384 states and 7722 transitions. [2020-04-17 23:03:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-17 23:03:28,645 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-04-17 23:03:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:28,649 INFO L225 Difference]: With dead ends: 3384 [2020-04-17 23:03:28,649 INFO L226 Difference]: Without dead ends: 3384 [2020-04-17 23:03:28,649 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-04-17 23:03:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2020-04-17 23:03:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 2282. [2020-04-17 23:03:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-04-17 23:03:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 5455 transitions. [2020-04-17 23:03:28,684 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 5455 transitions. Word has length 52 [2020-04-17 23:03:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:28,685 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 5455 transitions. [2020-04-17 23:03:28,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-17 23:03:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 5455 transitions. [2020-04-17 23:03:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-17 23:03:28,688 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:28,689 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:28,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:28,896 INFO L427 AbstractCegarLoop]: === Iteration 26 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:03:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:28,897 INFO L82 PathProgramCache]: Analyzing trace with hash -237771979, now seen corresponding path program 10 times [2020-04-17 23:03:28,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:28,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110739997] [2020-04-17 23:03:28,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 74 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:03:29,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110739997] [2020-04-17 23:03:29,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435657320] [2020-04-17 23:03:29,036 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:29,149 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:03:29,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:29,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:03:29,152 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:03:29,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:29,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 17 [2020-04-17 23:03:29,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783528617] [2020-04-17 23:03:29,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-17 23:03:29,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:29,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-17 23:03:29,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:03:29,183 INFO L87 Difference]: Start difference. First operand 2282 states and 5455 transitions. Second operand 18 states. [2020-04-17 23:03:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:29,587 INFO L93 Difference]: Finished difference Result 3357 states and 7674 transitions. [2020-04-17 23:03:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-17 23:03:29,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-04-17 23:03:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:29,593 INFO L225 Difference]: With dead ends: 3357 [2020-04-17 23:03:29,594 INFO L226 Difference]: Without dead ends: 3357 [2020-04-17 23:03:29,594 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2020-04-17 23:03:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2020-04-17 23:03:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2388. [2020-04-17 23:03:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2020-04-17 23:03:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 5752 transitions. [2020-04-17 23:03:29,651 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 5752 transitions. Word has length 52 [2020-04-17 23:03:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:29,651 INFO L479 AbstractCegarLoop]: Abstraction has 2388 states and 5752 transitions. [2020-04-17 23:03:29,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-17 23:03:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 5752 transitions. [2020-04-17 23:03:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-17 23:03:29,656 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:29,657 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:29,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:29,871 INFO L427 AbstractCegarLoop]: === Iteration 27 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:03:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1819300801, now seen corresponding path program 11 times [2020-04-17 23:03:29,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:29,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615012833] [2020-04-17 23:03:29,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:03:30,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615012833] [2020-04-17 23:03:30,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030983943] [2020-04-17 23:03:30,056 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:30,169 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-04-17 23:03:30,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:30,171 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:03:30,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:03:30,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:30,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 17 [2020-04-17 23:03:30,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541945631] [2020-04-17 23:03:30,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-17 23:03:30,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-17 23:03:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:03:30,179 INFO L87 Difference]: Start difference. First operand 2388 states and 5752 transitions. Second operand 18 states. [2020-04-17 23:03:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:30,459 INFO L93 Difference]: Finished difference Result 3013 states and 7021 transitions. [2020-04-17 23:03:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-17 23:03:30,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-04-17 23:03:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:30,462 INFO L225 Difference]: With dead ends: 3013 [2020-04-17 23:03:30,462 INFO L226 Difference]: Without dead ends: 3013 [2020-04-17 23:03:30,462 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-04-17 23:03:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-04-17 23:03:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2430. [2020-04-17 23:03:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2430 states. [2020-04-17 23:03:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 5867 transitions. [2020-04-17 23:03:30,495 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 5867 transitions. Word has length 52 [2020-04-17 23:03:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:30,495 INFO L479 AbstractCegarLoop]: Abstraction has 2430 states and 5867 transitions. [2020-04-17 23:03:30,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-17 23:03:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 5867 transitions. [2020-04-17 23:03:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-17 23:03:30,498 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:30,499 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:30,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:30,702 INFO L427 AbstractCegarLoop]: === Iteration 28 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:03:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 450553346, now seen corresponding path program 12 times [2020-04-17 23:03:30,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:30,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351983074] [2020-04-17 23:03:30,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:03:30,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351983074] [2020-04-17 23:03:30,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779793470] [2020-04-17 23:03:30,826 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:31,012 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-04-17 23:03:31,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:31,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:03:31,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:03:31,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:31,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 13 [2020-04-17 23:03:31,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078835154] [2020-04-17 23:03:31,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-17 23:03:31,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:31,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-17 23:03:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-04-17 23:03:31,025 INFO L87 Difference]: Start difference. First operand 2430 states and 5867 transitions. Second operand 14 states. [2020-04-17 23:03:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:31,222 INFO L93 Difference]: Finished difference Result 3192 states and 7361 transitions. [2020-04-17 23:03:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-17 23:03:31,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-04-17 23:03:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:31,226 INFO L225 Difference]: With dead ends: 3192 [2020-04-17 23:03:31,226 INFO L226 Difference]: Without dead ends: 3012 [2020-04-17 23:03:31,226 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:03:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-04-17 23:03:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2006. [2020-04-17 23:03:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-04-17 23:03:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 4691 transitions. [2020-04-17 23:03:31,260 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 4691 transitions. Word has length 53 [2020-04-17 23:03:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:31,260 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 4691 transitions. [2020-04-17 23:03:31,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-17 23:03:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 4691 transitions. [2020-04-17 23:03:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-17 23:03:31,264 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:31,264 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2020-04-17 23:03:31,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:31,470 INFO L427 AbstractCegarLoop]: === Iteration 29 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:03:31,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1876039885, now seen corresponding path program 7 times [2020-04-17 23:03:31,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:31,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425940246] [2020-04-17 23:03:31,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:03:31,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425940246] [2020-04-17 23:03:31,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338187847] [2020-04-17 23:03:31,694 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:31,790 INFO L264 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:03:31,791 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:03:31,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:31,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 24 [2020-04-17 23:03:31,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736836880] [2020-04-17 23:03:31,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-17 23:03:31,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-17 23:03:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-04-17 23:03:31,815 INFO L87 Difference]: Start difference. First operand 2006 states and 4691 transitions. Second operand 25 states. [2020-04-17 23:03:32,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:03:32,186 INFO L93 Difference]: Finished difference Result 2625 states and 5906 transitions. [2020-04-17 23:03:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-17 23:03:32,186 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 55 [2020-04-17 23:03:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:03:32,189 INFO L225 Difference]: With dead ends: 2625 [2020-04-17 23:03:32,189 INFO L226 Difference]: Without dead ends: 2625 [2020-04-17 23:03:32,190 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 23:03:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-04-17 23:03:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2083. [2020-04-17 23:03:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-04-17 23:03:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 4860 transitions. [2020-04-17 23:03:32,221 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 4860 transitions. Word has length 55 [2020-04-17 23:03:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:03:32,221 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 4860 transitions. [2020-04-17 23:03:32,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-17 23:03:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 4860 transitions. [2020-04-17 23:03:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-04-17 23:03:32,225 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:03:32,225 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:03:32,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:32,429 INFO L427 AbstractCegarLoop]: === Iteration 30 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:03:32,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:03:32,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1158660423, now seen corresponding path program 5 times [2020-04-17 23:03:32,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:03:32,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015802933] [2020-04-17 23:03:32,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:03:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:03:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:03:33,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015802933] [2020-04-17 23:03:33,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254413991] [2020-04-17 23:03:33,536 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:03:33,640 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-17 23:03:33,641 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:03:33,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 86 conjunts are in the unsatisfiable core [2020-04-17 23:03:33,647 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:03:33,656 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:03:33,656 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 131 treesize of output 133 [2020-04-17 23:03:33,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:33,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:33,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:33,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:33,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:33,660 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:33,769 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2020-04-17 23:03:33,770 INFO L619 ElimStorePlain]: treesize reduction 462, result has 5.9 percent of original size [2020-04-17 23:03:33,771 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 23:03:33,771 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:4 [2020-04-17 23:03:33,955 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 23:03:33,955 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:33,962 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:03:33,963 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 23:03:33,963 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-17 23:03:34,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:03:34,284 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 23:03:34,284 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:34,298 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:03:34,298 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 23:03:34,298 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:24 [2020-04-17 23:03:34,597 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:03:34,598 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 23:03:34,599 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:34,616 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:03:34,617 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 23:03:34,617 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:24 [2020-04-17 23:03:34,807 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 23:03:34,807 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:34,815 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:03:34,816 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 23:03:34,816 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-17 23:03:35,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:03:35,605 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 23:03:35,606 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:35,610 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 23:03:35,610 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:03:35,629 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:03:35,630 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 23:03:35,630 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-17 23:03:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:03:35,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:03:35,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 55 [2020-04-17 23:03:35,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245370410] [2020-04-17 23:03:35,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-04-17 23:03:35,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:03:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-04-17 23:03:35,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3002, Unknown=0, NotChecked=0, Total=3192 [2020-04-17 23:03:35,737 INFO L87 Difference]: Start difference. First operand 2083 states and 4860 transitions. Second operand 57 states. [2020-04-17 23:03:36,017 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-04-17 23:03:36,951 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-04-17 23:03:37,189 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-04-17 23:03:37,495 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-04-17 23:03:37,756 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-04-17 23:03:38,330 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-04-17 23:03:38,933 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-04-17 23:03:39,233 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-04-17 23:03:39,792 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2020-04-17 23:03:40,136 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-04-17 23:03:40,449 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-04-17 23:03:41,539 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-04-17 23:03:42,019 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-04-17 23:03:42,263 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-04-17 23:03:42,569 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-04-17 23:03:42,934 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2020-04-17 23:03:43,233 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-04-17 23:03:43,519 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-04-17 23:03:43,859 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2020-04-17 23:03:44,254 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-04-17 23:03:44,591 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2020-04-17 23:03:45,025 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2020-04-17 23:03:45,427 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-04-17 23:03:45,931 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2020-04-17 23:03:46,304 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2020-04-17 23:03:46,622 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-04-17 23:03:46,956 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-17 23:03:47,628 WARN L192 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2020-04-17 23:03:47,911 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-04-17 23:03:48,330 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-04-17 23:03:48,678 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-04-17 23:03:49,031 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-04-17 23:03:49,280 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-04-17 23:03:49,509 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-17 23:03:50,567 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-04-17 23:03:50,766 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-04-17 23:03:51,013 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-04-17 23:03:51,403 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-04-17 23:03:55,278 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-04-17 23:03:55,572 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-04-17 23:03:56,045 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-04-17 23:03:57,134 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-04-17 23:03:57,369 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-04-17 23:03:57,799 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-04-17 23:03:58,314 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-04-17 23:03:58,652 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-04-17 23:03:59,148 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2020-04-17 23:03:59,394 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-04-17 23:03:59,639 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-04-17 23:04:00,148 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-04-17 23:04:00,438 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-04-17 23:04:00,722 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2020-04-17 23:04:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:00,791 INFO L93 Difference]: Finished difference Result 7484 states and 16243 transitions. [2020-04-17 23:04:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-04-17 23:04:00,792 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 58 [2020-04-17 23:04:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:00,799 INFO L225 Difference]: With dead ends: 7484 [2020-04-17 23:04:00,800 INFO L226 Difference]: Without dead ends: 7484 [2020-04-17 23:04:00,802 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7742 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=3951, Invalid=23109, Unknown=0, NotChecked=0, Total=27060 [2020-04-17 23:04:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7484 states. [2020-04-17 23:04:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7484 to 1975. [2020-04-17 23:04:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-17 23:04:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 4605 transitions. [2020-04-17 23:04:00,858 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 4605 transitions. Word has length 58 [2020-04-17 23:04:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:00,858 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 4605 transitions. [2020-04-17 23:04:00,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-04-17 23:04:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 4605 transitions. [2020-04-17 23:04:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:00,862 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:00,863 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:01,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:01,075 INFO L427 AbstractCegarLoop]: === Iteration 31 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:01,076 INFO L82 PathProgramCache]: Analyzing trace with hash 78714317, now seen corresponding path program 13 times [2020-04-17 23:04:01,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:01,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758057797] [2020-04-17 23:04:01,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758057797] [2020-04-17 23:04:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768427950] [2020-04-17 23:04:01,261 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:01,364 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:04:01,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:01,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:01,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 20 [2020-04-17 23:04:01,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848401959] [2020-04-17 23:04:01,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-17 23:04:01,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:01,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-17 23:04:01,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:04:01,390 INFO L87 Difference]: Start difference. First operand 1975 states and 4605 transitions. Second operand 21 states. [2020-04-17 23:04:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:01,719 INFO L93 Difference]: Finished difference Result 2963 states and 6624 transitions. [2020-04-17 23:04:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-17 23:04:01,720 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-04-17 23:04:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:01,723 INFO L225 Difference]: With dead ends: 2963 [2020-04-17 23:04:01,723 INFO L226 Difference]: Without dead ends: 2963 [2020-04-17 23:04:01,723 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2020-04-17 23:04:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-04-17 23:04:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1975. [2020-04-17 23:04:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-17 23:04:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 4605 transitions. [2020-04-17 23:04:01,746 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 4605 transitions. Word has length 59 [2020-04-17 23:04:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:01,746 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 4605 transitions. [2020-04-17 23:04:01,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-17 23:04:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 4605 transitions. [2020-04-17 23:04:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:01,748 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:01,748 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:01,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:01,951 INFO L427 AbstractCegarLoop]: === Iteration 32 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:01,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1809328985, now seen corresponding path program 14 times [2020-04-17 23:04:01,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:01,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714013420] [2020-04-17 23:04:01,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:02,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714013420] [2020-04-17 23:04:02,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814110650] [2020-04-17 23:04:02,117 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:02,221 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:04:02,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:02,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:04:02,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:02,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:02,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 20 [2020-04-17 23:04:02,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267857261] [2020-04-17 23:04:02,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-17 23:04:02,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:02,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-17 23:04:02,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:04:02,250 INFO L87 Difference]: Start difference. First operand 1975 states and 4605 transitions. Second operand 21 states. [2020-04-17 23:04:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:02,591 INFO L93 Difference]: Finished difference Result 3086 states and 6887 transitions. [2020-04-17 23:04:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-17 23:04:02,592 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-04-17 23:04:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:02,595 INFO L225 Difference]: With dead ends: 3086 [2020-04-17 23:04:02,596 INFO L226 Difference]: Without dead ends: 3086 [2020-04-17 23:04:02,596 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 23:04:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2020-04-17 23:04:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1975. [2020-04-17 23:04:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-17 23:04:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 4605 transitions. [2020-04-17 23:04:02,656 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 4605 transitions. Word has length 59 [2020-04-17 23:04:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:02,657 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 4605 transitions. [2020-04-17 23:04:02,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-17 23:04:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 4605 transitions. [2020-04-17 23:04:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:02,660 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:02,660 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:02,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:02,865 INFO L427 AbstractCegarLoop]: === Iteration 33 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1118044237, now seen corresponding path program 15 times [2020-04-17 23:04:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816510026] [2020-04-17 23:04:02,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:03,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816510026] [2020-04-17 23:04:03,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236296572] [2020-04-17 23:04:03,041 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:03,207 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-04-17 23:04:03,208 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:03,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:04:03,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:03,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:03,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 20 [2020-04-17 23:04:03,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136321083] [2020-04-17 23:04:03,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-17 23:04:03,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:03,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-17 23:04:03,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:04:03,235 INFO L87 Difference]: Start difference. First operand 1975 states and 4605 transitions. Second operand 21 states. [2020-04-17 23:04:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:03,527 INFO L93 Difference]: Finished difference Result 3215 states and 7146 transitions. [2020-04-17 23:04:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-17 23:04:03,527 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-04-17 23:04:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:03,530 INFO L225 Difference]: With dead ends: 3215 [2020-04-17 23:04:03,530 INFO L226 Difference]: Without dead ends: 3215 [2020-04-17 23:04:03,531 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2020-04-17 23:04:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2020-04-17 23:04:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2093. [2020-04-17 23:04:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-04-17 23:04:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 4938 transitions. [2020-04-17 23:04:03,555 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 4938 transitions. Word has length 59 [2020-04-17 23:04:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:03,555 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 4938 transitions. [2020-04-17 23:04:03,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-17 23:04:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 4938 transitions. [2020-04-17 23:04:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:03,559 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:03,559 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:03,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:03,763 INFO L427 AbstractCegarLoop]: === Iteration 34 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1119850279, now seen corresponding path program 16 times [2020-04-17 23:04:03,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:03,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709310509] [2020-04-17 23:04:03,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:03,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709310509] [2020-04-17 23:04:03,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158312476] [2020-04-17 23:04:03,955 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:04,093 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:04:04,093 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:04,096 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:04:04,098 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:04,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:04,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 20 [2020-04-17 23:04:04,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62866460] [2020-04-17 23:04:04,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-17 23:04:04,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:04,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-17 23:04:04,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:04:04,160 INFO L87 Difference]: Start difference. First operand 2093 states and 4938 transitions. Second operand 21 states. [2020-04-17 23:04:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:04,509 INFO L93 Difference]: Finished difference Result 2893 states and 6547 transitions. [2020-04-17 23:04:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 23:04:04,510 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-04-17 23:04:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:04,512 INFO L225 Difference]: With dead ends: 2893 [2020-04-17 23:04:04,513 INFO L226 Difference]: Without dead ends: 2893 [2020-04-17 23:04:04,513 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2020-04-17 23:04:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-04-17 23:04:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2103. [2020-04-17 23:04:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2020-04-17 23:04:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 4983 transitions. [2020-04-17 23:04:04,534 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 4983 transitions. Word has length 59 [2020-04-17 23:04:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:04,534 INFO L479 AbstractCegarLoop]: Abstraction has 2103 states and 4983 transitions. [2020-04-17 23:04:04,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-17 23:04:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 4983 transitions. [2020-04-17 23:04:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:04,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:04,536 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:04,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:04,738 INFO L427 AbstractCegarLoop]: === Iteration 35 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1377137971, now seen corresponding path program 17 times [2020-04-17 23:04:04,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:04,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707883934] [2020-04-17 23:04:04,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 116 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:04:04,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707883934] [2020-04-17 23:04:04,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225608202] [2020-04-17 23:04:04,985 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:05,179 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-04-17 23:04:05,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:05,181 INFO L264 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-17 23:04:05,183 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:05,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:05,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 20 [2020-04-17 23:04:05,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006324291] [2020-04-17 23:04:05,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-17 23:04:05,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:05,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-17 23:04:05,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-04-17 23:04:05,193 INFO L87 Difference]: Start difference. First operand 2103 states and 4983 transitions. Second operand 21 states. [2020-04-17 23:04:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:05,497 INFO L93 Difference]: Finished difference Result 2771 states and 6316 transitions. [2020-04-17 23:04:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-17 23:04:05,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-04-17 23:04:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:05,502 INFO L225 Difference]: With dead ends: 2771 [2020-04-17 23:04:05,502 INFO L226 Difference]: Without dead ends: 2771 [2020-04-17 23:04:05,502 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2020-04-17 23:04:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2020-04-17 23:04:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2149. [2020-04-17 23:04:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2149 states. [2020-04-17 23:04:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 5090 transitions. [2020-04-17 23:04:05,572 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 5090 transitions. Word has length 59 [2020-04-17 23:04:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:05,572 INFO L479 AbstractCegarLoop]: Abstraction has 2149 states and 5090 transitions. [2020-04-17 23:04:05,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-17 23:04:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 5090 transitions. [2020-04-17 23:04:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-04-17 23:04:05,575 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:05,575 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:05,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:05,778 INFO L427 AbstractCegarLoop]: === Iteration 36 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:05,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:05,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1041002708, now seen corresponding path program 6 times [2020-04-17 23:04:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:05,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915196101] [2020-04-17 23:04:05,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:05,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915196101] [2020-04-17 23:04:05,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867450557] [2020-04-17 23:04:05,950 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:06,070 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-17 23:04:06,070 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:06,071 INFO L264 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-17 23:04:06,072 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:06,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:06,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2020-04-17 23:04:06,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361126095] [2020-04-17 23:04:06,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-17 23:04:06,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-17 23:04:06,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-04-17 23:04:06,087 INFO L87 Difference]: Start difference. First operand 2149 states and 5090 transitions. Second operand 18 states. [2020-04-17 23:04:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:06,333 INFO L93 Difference]: Finished difference Result 3135 states and 7043 transitions. [2020-04-17 23:04:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-17 23:04:06,334 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-04-17 23:04:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:06,336 INFO L225 Difference]: With dead ends: 3135 [2020-04-17 23:04:06,336 INFO L226 Difference]: Without dead ends: 2999 [2020-04-17 23:04:06,337 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-04-17 23:04:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-04-17 23:04:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2029. [2020-04-17 23:04:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2020-04-17 23:04:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 4733 transitions. [2020-04-17 23:04:06,358 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 4733 transitions. Word has length 59 [2020-04-17 23:04:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:06,359 INFO L479 AbstractCegarLoop]: Abstraction has 2029 states and 4733 transitions. [2020-04-17 23:04:06,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-17 23:04:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 4733 transitions. [2020-04-17 23:04:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-04-17 23:04:06,361 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:06,361 INFO L425 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2020-04-17 23:04:06,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:06,562 INFO L427 AbstractCegarLoop]: === Iteration 37 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -627600613, now seen corresponding path program 8 times [2020-04-17 23:04:06,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:06,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185403612] [2020-04-17 23:04:06,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:06,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185403612] [2020-04-17 23:04:06,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958812433] [2020-04-17 23:04:06,822 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:06,922 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:04:06,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:06,923 INFO L264 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:06,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:06,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:06,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18] total 27 [2020-04-17 23:04:06,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210420198] [2020-04-17 23:04:06,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-17 23:04:06,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-17 23:04:06,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-04-17 23:04:06,950 INFO L87 Difference]: Start difference. First operand 2029 states and 4733 transitions. Second operand 28 states. [2020-04-17 23:04:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:07,305 INFO L93 Difference]: Finished difference Result 2665 states and 5979 transitions. [2020-04-17 23:04:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-17 23:04:07,306 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 62 [2020-04-17 23:04:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:07,309 INFO L225 Difference]: With dead ends: 2665 [2020-04-17 23:04:07,309 INFO L226 Difference]: Without dead ends: 2665 [2020-04-17 23:04:07,310 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 23:04:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2020-04-17 23:04:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2106. [2020-04-17 23:04:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-04-17 23:04:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 4902 transitions. [2020-04-17 23:04:07,336 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 4902 transitions. Word has length 62 [2020-04-17 23:04:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:07,336 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 4902 transitions. [2020-04-17 23:04:07,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-17 23:04:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 4902 transitions. [2020-04-17 23:04:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:07,339 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:07,339 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:07,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:07,540 INFO L427 AbstractCegarLoop]: === Iteration 38 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1762823605, now seen corresponding path program 18 times [2020-04-17 23:04:07,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:07,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247823363] [2020-04-17 23:04:07,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:07,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247823363] [2020-04-17 23:04:07,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030091183] [2020-04-17 23:04:07,774 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:08,027 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-04-17 23:04:08,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:08,029 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:08,030 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:08,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:08,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 23 [2020-04-17 23:04:08,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953892114] [2020-04-17 23:04:08,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:08,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:08,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:08,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:08,098 INFO L87 Difference]: Start difference. First operand 2106 states and 4902 transitions. Second operand 24 states. [2020-04-17 23:04:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:08,672 INFO L93 Difference]: Finished difference Result 3261 states and 7250 transitions. [2020-04-17 23:04:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-17 23:04:08,672 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:08,680 INFO L225 Difference]: With dead ends: 3261 [2020-04-17 23:04:08,680 INFO L226 Difference]: Without dead ends: 3261 [2020-04-17 23:04:08,685 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=1174, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 23:04:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2020-04-17 23:04:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2106. [2020-04-17 23:04:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-04-17 23:04:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 4902 transitions. [2020-04-17 23:04:08,797 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 4902 transitions. Word has length 66 [2020-04-17 23:04:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:08,798 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 4902 transitions. [2020-04-17 23:04:08,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 4902 transitions. [2020-04-17 23:04:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:08,803 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:08,805 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:09,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:09,013 INFO L427 AbstractCegarLoop]: === Iteration 39 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:09,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:09,013 INFO L82 PathProgramCache]: Analyzing trace with hash -801529023, now seen corresponding path program 19 times [2020-04-17 23:04:09,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:09,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105662089] [2020-04-17 23:04:09,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:09,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105662089] [2020-04-17 23:04:09,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955324665] [2020-04-17 23:04:09,352 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:09,476 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:09,478 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:09,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:09,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 23 [2020-04-17 23:04:09,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712278791] [2020-04-17 23:04:09,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:09,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:09,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:09,512 INFO L87 Difference]: Start difference. First operand 2106 states and 4902 transitions. Second operand 24 states. [2020-04-17 23:04:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:09,880 INFO L93 Difference]: Finished difference Result 3444 states and 7636 transitions. [2020-04-17 23:04:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-17 23:04:09,880 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:09,883 INFO L225 Difference]: With dead ends: 3444 [2020-04-17 23:04:09,883 INFO L226 Difference]: Without dead ends: 3444 [2020-04-17 23:04:09,884 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=1106, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 23:04:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2020-04-17 23:04:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2106. [2020-04-17 23:04:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-04-17 23:04:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 4902 transitions. [2020-04-17 23:04:09,912 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 4902 transitions. Word has length 66 [2020-04-17 23:04:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:09,912 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 4902 transitions. [2020-04-17 23:04:09,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 4902 transitions. [2020-04-17 23:04:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:09,914 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:09,914 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:10,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:10,115 INFO L427 AbstractCegarLoop]: === Iteration 40 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:10,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1492813771, now seen corresponding path program 20 times [2020-04-17 23:04:10,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:10,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476157375] [2020-04-17 23:04:10,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:10,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476157375] [2020-04-17 23:04:10,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559587537] [2020-04-17 23:04:10,321 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:10,431 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:04:10,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:10,432 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:10,434 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:10,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:10,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 23 [2020-04-17 23:04:10,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11259944] [2020-04-17 23:04:10,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:10,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:10,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:10,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:10,468 INFO L87 Difference]: Start difference. First operand 2106 states and 4902 transitions. Second operand 24 states. [2020-04-17 23:04:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:10,822 INFO L93 Difference]: Finished difference Result 3483 states and 7724 transitions. [2020-04-17 23:04:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-17 23:04:10,823 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:10,826 INFO L225 Difference]: With dead ends: 3483 [2020-04-17 23:04:10,826 INFO L226 Difference]: Without dead ends: 3483 [2020-04-17 23:04:10,827 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2020-04-17 23:04:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2020-04-17 23:04:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 2224. [2020-04-17 23:04:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2224 states. [2020-04-17 23:04:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 5235 transitions. [2020-04-17 23:04:10,850 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 5235 transitions. Word has length 66 [2020-04-17 23:04:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:10,851 INFO L479 AbstractCegarLoop]: Abstraction has 2224 states and 5235 transitions. [2020-04-17 23:04:10,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 5235 transitions. [2020-04-17 23:04:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:10,853 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:10,853 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:11,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:11,054 INFO L427 AbstractCegarLoop]: === Iteration 41 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1236058300, now seen corresponding path program 7 times [2020-04-17 23:04:11,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:11,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85630130] [2020-04-17 23:04:11,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:11,646 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-04-17 23:04:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:13,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85630130] [2020-04-17 23:04:13,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022680544] [2020-04-17 23:04:13,253 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:13,363 INFO L264 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 123 conjunts are in the unsatisfiable core [2020-04-17 23:04:13,367 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:13,382 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:13,383 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 608 treesize of output 610 [2020-04-17 23:04:13,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:04:13,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:04:13,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:04:13,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:04:13,387 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:13,543 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-04-17 23:04:13,543 INFO L619 ElimStorePlain]: treesize reduction 1912, result has 1.6 percent of original size [2020-04-17 23:04:13,544 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 23:04:13,544 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:8 [2020-04-17 23:04:13,728 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 23:04:13,728 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:13,737 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:13,737 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 23:04:13,737 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-17 23:04:14,022 INFO L343 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-04-17 23:04:14,026 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 1 case distinctions, treesize of input 30 treesize of output 29 [2020-04-17 23:04:14,027 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:14,041 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:14,041 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 23:04:14,041 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:27 [2020-04-17 23:04:14,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:04:14,276 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 23:04:14,277 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:14,293 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:14,294 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 23:04:14,294 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:22 [2020-04-17 23:04:14,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:04:14,552 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 23:04:14,553 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:14,576 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:14,577 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 23:04:14,577 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:22 [2020-04-17 23:04:14,745 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 23:04:14,745 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:14,756 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:04:14,756 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 23:04:14,757 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:29 [2020-04-17 23:04:15,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:04:15,740 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 23:04:15,740 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:15,743 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 23:04:15,743 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:04:15,764 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:04:15,764 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 23:04:15,764 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:92, output treesize:11 [2020-04-17 23:04:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:15,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:15,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 31] total 73 [2020-04-17 23:04:15,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100698748] [2020-04-17 23:04:15,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-04-17 23:04:15,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:15,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-04-17 23:04:15,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=5128, Unknown=0, NotChecked=0, Total=5550 [2020-04-17 23:04:15,897 INFO L87 Difference]: Start difference. First operand 2224 states and 5235 transitions. Second operand 75 states. [2020-04-17 23:04:19,791 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2020-04-17 23:04:30,842 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-04-17 23:04:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:46,110 INFO L93 Difference]: Finished difference Result 10580 states and 22818 transitions. [2020-04-17 23:04:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2020-04-17 23:04:46,111 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 66 [2020-04-17 23:04:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:46,121 INFO L225 Difference]: With dead ends: 10580 [2020-04-17 23:04:46,121 INFO L226 Difference]: Without dead ends: 9392 [2020-04-17 23:04:46,123 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18614 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=5079, Invalid=48513, Unknown=0, NotChecked=0, Total=53592 [2020-04-17 23:04:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2020-04-17 23:04:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 3471. [2020-04-17 23:04:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3471 states. [2020-04-17 23:04:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 8061 transitions. [2020-04-17 23:04:46,205 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 8061 transitions. Word has length 66 [2020-04-17 23:04:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:46,205 INFO L479 AbstractCegarLoop]: Abstraction has 3471 states and 8061 transitions. [2020-04-17 23:04:46,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-04-17 23:04:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 8061 transitions. [2020-04-17 23:04:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:46,209 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:46,209 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:46,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:46,410 INFO L427 AbstractCegarLoop]: === Iteration 42 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash 564259009, now seen corresponding path program 21 times [2020-04-17 23:04:46,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:46,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973828403] [2020-04-17 23:04:46,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973828403] [2020-04-17 23:04:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948997203] [2020-04-17 23:04:46,629 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:46,902 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-04-17 23:04:46,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:46,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:46,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:46,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:46,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 23 [2020-04-17 23:04:46,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405539619] [2020-04-17 23:04:46,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:46,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:46,964 INFO L87 Difference]: Start difference. First operand 3471 states and 8061 transitions. Second operand 24 states. [2020-04-17 23:04:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:47,354 INFO L93 Difference]: Finished difference Result 5090 states and 11365 transitions. [2020-04-17 23:04:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-17 23:04:47,354 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:47,359 INFO L225 Difference]: With dead ends: 5090 [2020-04-17 23:04:47,359 INFO L226 Difference]: Without dead ends: 5090 [2020-04-17 23:04:47,360 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 23:04:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5090 states. [2020-04-17 23:04:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5090 to 3439. [2020-04-17 23:04:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3439 states. [2020-04-17 23:04:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 8005 transitions. [2020-04-17 23:04:47,415 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 8005 transitions. Word has length 66 [2020-04-17 23:04:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:47,415 INFO L479 AbstractCegarLoop]: Abstraction has 3439 states and 8005 transitions. [2020-04-17 23:04:47,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 8005 transitions. [2020-04-17 23:04:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:47,419 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:47,419 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:47,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:47,620 INFO L427 AbstractCegarLoop]: === Iteration 43 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:47,621 INFO L82 PathProgramCache]: Analyzing trace with hash 306971317, now seen corresponding path program 22 times [2020-04-17 23:04:47,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:47,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167350946] [2020-04-17 23:04:47,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:47,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167350946] [2020-04-17 23:04:47,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458086909] [2020-04-17 23:04:47,896 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:48,003 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:04:48,003 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:48,004 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:48,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:48,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:48,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 23 [2020-04-17 23:04:48,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087683062] [2020-04-17 23:04:48,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:48,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:48,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:48,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:48,033 INFO L87 Difference]: Start difference. First operand 3439 states and 8005 transitions. Second operand 24 states. [2020-04-17 23:04:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:48,360 INFO L93 Difference]: Finished difference Result 4888 states and 10982 transitions. [2020-04-17 23:04:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-17 23:04:48,361 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:48,366 INFO L225 Difference]: With dead ends: 4888 [2020-04-17 23:04:48,366 INFO L226 Difference]: Without dead ends: 4888 [2020-04-17 23:04:48,366 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=914, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 23:04:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2020-04-17 23:04:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 3775. [2020-04-17 23:04:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3775 states. [2020-04-17 23:04:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 8797 transitions. [2020-04-17 23:04:48,407 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 8797 transitions. Word has length 66 [2020-04-17 23:04:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:48,407 INFO L479 AbstractCegarLoop]: Abstraction has 3775 states and 8797 transitions. [2020-04-17 23:04:48,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 8797 transitions. [2020-04-17 23:04:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-04-17 23:04:48,411 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:48,411 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:48,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:48,612 INFO L427 AbstractCegarLoop]: === Iteration 44 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:48,613 INFO L82 PathProgramCache]: Analyzing trace with hash -295530943, now seen corresponding path program 23 times [2020-04-17 23:04:48,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:48,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358563735] [2020-04-17 23:04:48,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 160 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:04:48,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358563735] [2020-04-17 23:04:48,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982350657] [2020-04-17 23:04:48,835 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:49,012 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-04-17 23:04:49,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:49,014 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:49,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:49,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:49,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 23 [2020-04-17 23:04:49,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187154634] [2020-04-17 23:04:49,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-17 23:04:49,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:49,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-17 23:04:49,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-04-17 23:04:49,023 INFO L87 Difference]: Start difference. First operand 3775 states and 8797 transitions. Second operand 24 states. [2020-04-17 23:04:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:49,388 INFO L93 Difference]: Finished difference Result 4629 states and 10465 transitions. [2020-04-17 23:04:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-17 23:04:49,388 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 66 [2020-04-17 23:04:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:49,393 INFO L225 Difference]: With dead ends: 4629 [2020-04-17 23:04:49,393 INFO L226 Difference]: Without dead ends: 4629 [2020-04-17 23:04:49,393 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2020-04-17 23:04:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2020-04-17 23:04:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 3835. [2020-04-17 23:04:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3835 states. [2020-04-17 23:04:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 8941 transitions. [2020-04-17 23:04:49,434 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 8941 transitions. Word has length 66 [2020-04-17 23:04:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:49,434 INFO L479 AbstractCegarLoop]: Abstraction has 3835 states and 8941 transitions. [2020-04-17 23:04:49,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-17 23:04:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 8941 transitions. [2020-04-17 23:04:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-04-17 23:04:49,438 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:49,438 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:49,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:49,639 INFO L427 AbstractCegarLoop]: === Iteration 45 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -255652990, now seen corresponding path program 24 times [2020-04-17 23:04:49,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:49,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421504064] [2020-04-17 23:04:49,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-17 23:04:49,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421504064] [2020-04-17 23:04:49,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945187615] [2020-04-17 23:04:49,812 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:50,038 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-04-17 23:04:50,038 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:50,040 INFO L264 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:50,045 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:04:50,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:50,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 19 [2020-04-17 23:04:50,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097732575] [2020-04-17 23:04:50,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-17 23:04:50,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:50,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-17 23:04:50,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-04-17 23:04:50,073 INFO L87 Difference]: Start difference. First operand 3835 states and 8941 transitions. Second operand 20 states. [2020-04-17 23:04:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:50,345 INFO L93 Difference]: Finished difference Result 6042 states and 13575 transitions. [2020-04-17 23:04:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 23:04:50,346 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-04-17 23:04:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:50,352 INFO L225 Difference]: With dead ends: 6042 [2020-04-17 23:04:50,352 INFO L226 Difference]: Without dead ends: 6042 [2020-04-17 23:04:50,352 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2020-04-17 23:04:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2020-04-17 23:04:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 4069. [2020-04-17 23:04:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4069 states. [2020-04-17 23:04:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 9544 transitions. [2020-04-17 23:04:50,396 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 9544 transitions. Word has length 67 [2020-04-17 23:04:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:50,397 INFO L479 AbstractCegarLoop]: Abstraction has 4069 states and 9544 transitions. [2020-04-17 23:04:50,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-17 23:04:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 9544 transitions. [2020-04-17 23:04:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-04-17 23:04:50,401 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:50,401 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:50,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:50,606 INFO L427 AbstractCegarLoop]: === Iteration 46 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:50,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1506012418, now seen corresponding path program 25 times [2020-04-17 23:04:50,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:50,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082957053] [2020-04-17 23:04:50,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-17 23:04:50,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082957053] [2020-04-17 23:04:50,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557292205] [2020-04-17 23:04:50,877 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:51,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:51,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:04:51,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 19 [2020-04-17 23:04:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124558364] [2020-04-17 23:04:51,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-17 23:04:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-17 23:04:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-04-17 23:04:51,063 INFO L87 Difference]: Start difference. First operand 4069 states and 9544 transitions. Second operand 20 states. [2020-04-17 23:04:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:51,364 INFO L93 Difference]: Finished difference Result 6107 states and 13750 transitions. [2020-04-17 23:04:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 23:04:51,365 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-04-17 23:04:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:51,371 INFO L225 Difference]: With dead ends: 6107 [2020-04-17 23:04:51,371 INFO L226 Difference]: Without dead ends: 6107 [2020-04-17 23:04:51,371 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2020-04-17 23:04:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6107 states. [2020-04-17 23:04:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6107 to 4145. [2020-04-17 23:04:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4145 states. [2020-04-17 23:04:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 9708 transitions. [2020-04-17 23:04:51,418 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 9708 transitions. Word has length 67 [2020-04-17 23:04:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:51,418 INFO L479 AbstractCegarLoop]: Abstraction has 4145 states and 9708 transitions. [2020-04-17 23:04:51,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-17 23:04:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 9708 transitions. [2020-04-17 23:04:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-04-17 23:04:51,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:51,424 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:51,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:51,626 INFO L427 AbstractCegarLoop]: === Iteration 47 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1446356094, now seen corresponding path program 26 times [2020-04-17 23:04:51,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:51,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650152635] [2020-04-17 23:04:51,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:51,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650152635] [2020-04-17 23:04:51,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39362116] [2020-04-17 23:04:51,850 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:51,983 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:04:51,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:51,985 INFO L264 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:51,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:04:52,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:52,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 19 [2020-04-17 23:04:52,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467664415] [2020-04-17 23:04:52,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-17 23:04:52,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:52,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-17 23:04:52,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-04-17 23:04:52,013 INFO L87 Difference]: Start difference. First operand 4145 states and 9708 transitions. Second operand 20 states. [2020-04-17 23:04:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:52,300 INFO L93 Difference]: Finished difference Result 5914 states and 13306 transitions. [2020-04-17 23:04:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 23:04:52,300 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-04-17 23:04:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:52,306 INFO L225 Difference]: With dead ends: 5914 [2020-04-17 23:04:52,306 INFO L226 Difference]: Without dead ends: 5914 [2020-04-17 23:04:52,306 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2020-04-17 23:04:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2020-04-17 23:04:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 4133. [2020-04-17 23:04:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2020-04-17 23:04:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 9660 transitions. [2020-04-17 23:04:52,350 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 9660 transitions. Word has length 67 [2020-04-17 23:04:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:52,350 INFO L479 AbstractCegarLoop]: Abstraction has 4133 states and 9660 transitions. [2020-04-17 23:04:52,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-17 23:04:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 9660 transitions. [2020-04-17 23:04:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-04-17 23:04:52,355 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:52,355 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:52,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:52,559 INFO L427 AbstractCegarLoop]: === Iteration 48 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:52,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:52,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1173173112, now seen corresponding path program 27 times [2020-04-17 23:04:52,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:52,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701709274] [2020-04-17 23:04:52,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:52,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701709274] [2020-04-17 23:04:52,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463585369] [2020-04-17 23:04:52,774 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:53,018 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-04-17 23:04:53,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:53,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:53,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:04:53,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:53,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 19 [2020-04-17 23:04:53,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270851820] [2020-04-17 23:04:53,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-17 23:04:53,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:53,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-17 23:04:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-04-17 23:04:53,030 INFO L87 Difference]: Start difference. First operand 4133 states and 9660 transitions. Second operand 20 states. [2020-04-17 23:04:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:53,324 INFO L93 Difference]: Finished difference Result 5550 states and 12514 transitions. [2020-04-17 23:04:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-17 23:04:53,325 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-04-17 23:04:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:53,330 INFO L225 Difference]: With dead ends: 5550 [2020-04-17 23:04:53,330 INFO L226 Difference]: Without dead ends: 5550 [2020-04-17 23:04:53,331 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2020-04-17 23:04:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2020-04-17 23:04:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 4221. [2020-04-17 23:04:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2020-04-17 23:04:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 9866 transitions. [2020-04-17 23:04:53,378 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 9866 transitions. Word has length 67 [2020-04-17 23:04:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:53,378 INFO L479 AbstractCegarLoop]: Abstraction has 4221 states and 9866 transitions. [2020-04-17 23:04:53,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-17 23:04:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 9866 transitions. [2020-04-17 23:04:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-04-17 23:04:53,381 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:53,381 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:53,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:53,582 INFO L427 AbstractCegarLoop]: === Iteration 49 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:53,583 INFO L82 PathProgramCache]: Analyzing trace with hash 245078722, now seen corresponding path program 28 times [2020-04-17 23:04:53,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:53,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464781550] [2020-04-17 23:04:53,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:53,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464781550] [2020-04-17 23:04:53,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336786075] [2020-04-17 23:04:53,775 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:53,879 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 23:04:53,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:53,880 INFO L264 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-17 23:04:53,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-04-17 23:04:53,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:53,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 19 [2020-04-17 23:04:53,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562788025] [2020-04-17 23:04:53,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-17 23:04:53,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-17 23:04:53,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-04-17 23:04:53,960 INFO L87 Difference]: Start difference. First operand 4221 states and 9866 transitions. Second operand 20 states. [2020-04-17 23:04:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:54,247 INFO L93 Difference]: Finished difference Result 5499 states and 12404 transitions. [2020-04-17 23:04:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-17 23:04:54,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-04-17 23:04:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:54,254 INFO L225 Difference]: With dead ends: 5499 [2020-04-17 23:04:54,254 INFO L226 Difference]: Without dead ends: 5499 [2020-04-17 23:04:54,254 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2020-04-17 23:04:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2020-04-17 23:04:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4433. [2020-04-17 23:04:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4433 states. [2020-04-17 23:04:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 10338 transitions. [2020-04-17 23:04:54,305 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 10338 transitions. Word has length 67 [2020-04-17 23:04:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:54,305 INFO L479 AbstractCegarLoop]: Abstraction has 4433 states and 10338 transitions. [2020-04-17 23:04:54,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-17 23:04:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 10338 transitions. [2020-04-17 23:04:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-04-17 23:04:54,308 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:54,309 INFO L425 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2020-04-17 23:04:54,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:54,509 INFO L427 AbstractCegarLoop]: === Iteration 50 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1159213619, now seen corresponding path program 9 times [2020-04-17 23:04:54,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:54,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93709859] [2020-04-17 23:04:54,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:54,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93709859] [2020-04-17 23:04:54,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576004583] [2020-04-17 23:04:54,842 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:55,297 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-04-17 23:04:55,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:55,299 INFO L264 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-17 23:04:55,300 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:04:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20] total 29 [2020-04-17 23:04:55,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513251404] [2020-04-17 23:04:55,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-04-17 23:04:55,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:55,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-04-17 23:04:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2020-04-17 23:04:55,329 INFO L87 Difference]: Start difference. First operand 4433 states and 10338 transitions. Second operand 30 states. [2020-04-17 23:04:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:55,747 INFO L93 Difference]: Finished difference Result 5207 states and 11837 transitions. [2020-04-17 23:04:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-17 23:04:55,748 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-04-17 23:04:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:55,753 INFO L225 Difference]: With dead ends: 5207 [2020-04-17 23:04:55,753 INFO L226 Difference]: Without dead ends: 5207 [2020-04-17 23:04:55,754 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2020-04-17 23:04:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2020-04-17 23:04:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 4524. [2020-04-17 23:04:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4524 states. [2020-04-17 23:04:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 10546 transitions. [2020-04-17 23:04:55,796 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 10546 transitions. Word has length 69 [2020-04-17 23:04:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:55,797 INFO L479 AbstractCegarLoop]: Abstraction has 4524 states and 10546 transitions. [2020-04-17 23:04:55,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-04-17 23:04:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 10546 transitions. [2020-04-17 23:04:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-04-17 23:04:55,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:55,800 INFO L425 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:56,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:56,001 INFO L427 AbstractCegarLoop]: === Iteration 51 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:56,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1434312909, now seen corresponding path program 29 times [2020-04-17 23:04:56,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:56,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836665089] [2020-04-17 23:04:56,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 206 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836665089] [2020-04-17 23:04:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628342090] [2020-04-17 23:04:56,241 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:56,427 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-04-17 23:04:56,428 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:56,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-17 23:04:56,431 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:56,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:56,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 26 [2020-04-17 23:04:56,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907573621] [2020-04-17 23:04:56,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-17 23:04:56,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-17 23:04:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-04-17 23:04:56,487 INFO L87 Difference]: Start difference. First operand 4524 states and 10546 transitions. Second operand 27 states. [2020-04-17 23:04:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:56,933 INFO L93 Difference]: Finished difference Result 6106 states and 13796 transitions. [2020-04-17 23:04:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-17 23:04:56,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-04-17 23:04:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:56,940 INFO L225 Difference]: With dead ends: 6106 [2020-04-17 23:04:56,940 INFO L226 Difference]: Without dead ends: 6106 [2020-04-17 23:04:56,940 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2020-04-17 23:04:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2020-04-17 23:04:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 4510. [2020-04-17 23:04:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4510 states. [2020-04-17 23:04:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 10507 transitions. [2020-04-17 23:04:56,987 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 10507 transitions. Word has length 73 [2020-04-17 23:04:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:56,987 INFO L479 AbstractCegarLoop]: Abstraction has 4510 states and 10507 transitions. [2020-04-17 23:04:56,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-17 23:04:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 10507 transitions. [2020-04-17 23:04:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-04-17 23:04:56,991 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:56,991 INFO L425 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:57,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:57,192 INFO L427 AbstractCegarLoop]: === Iteration 52 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1130039719, now seen corresponding path program 30 times [2020-04-17 23:04:57,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:57,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466214720] [2020-04-17 23:04:57,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 206 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466214720] [2020-04-17 23:04:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715366909] [2020-04-17 23:04:57,463 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:57,821 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-04-17 23:04:57,821 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:04:57,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-17 23:04:57,824 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:57,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:57,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 26 [2020-04-17 23:04:57,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421873776] [2020-04-17 23:04:57,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-17 23:04:57,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-17 23:04:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-04-17 23:04:57,852 INFO L87 Difference]: Start difference. First operand 4510 states and 10507 transitions. Second operand 27 states. [2020-04-17 23:04:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:58,302 INFO L93 Difference]: Finished difference Result 6386 states and 14296 transitions. [2020-04-17 23:04:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-17 23:04:58,302 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-04-17 23:04:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:58,308 INFO L225 Difference]: With dead ends: 6386 [2020-04-17 23:04:58,309 INFO L226 Difference]: Without dead ends: 6386 [2020-04-17 23:04:58,309 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1428, Unknown=0, NotChecked=0, Total=1806 [2020-04-17 23:04:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2020-04-17 23:04:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 4510. [2020-04-17 23:04:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4510 states. [2020-04-17 23:04:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 10507 transitions. [2020-04-17 23:04:58,367 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 10507 transitions. Word has length 73 [2020-04-17 23:04:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:58,367 INFO L479 AbstractCegarLoop]: Abstraction has 4510 states and 10507 transitions. [2020-04-17 23:04:58,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-17 23:04:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 10507 transitions. [2020-04-17 23:04:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-04-17 23:04:58,372 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:58,372 INFO L425 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:58,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:58,573 INFO L427 AbstractCegarLoop]: === Iteration 53 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:58,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1821324467, now seen corresponding path program 31 times [2020-04-17 23:04:58,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:58,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823466157] [2020-04-17 23:04:58,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 206 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-17 23:04:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823466157] [2020-04-17 23:04:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079153420] [2020-04-17 23:04:58,841 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:04:59,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-17 23:04:59,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:04:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 23:04:59,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:04:59,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 26 [2020-04-17 23:04:59,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194998202] [2020-04-17 23:04:59,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-17 23:04:59,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:04:59,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-17 23:04:59,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-04-17 23:04:59,095 INFO L87 Difference]: Start difference. First operand 4510 states and 10507 transitions. Second operand 27 states. [2020-04-17 23:04:59,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 23:04:59,671 INFO L93 Difference]: Finished difference Result 6528 states and 14571 transitions. [2020-04-17 23:04:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 23:04:59,671 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-04-17 23:04:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 23:04:59,677 INFO L225 Difference]: With dead ends: 6528 [2020-04-17 23:04:59,678 INFO L226 Difference]: Without dead ends: 6528 [2020-04-17 23:04:59,678 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2020-04-17 23:04:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2020-04-17 23:04:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4628. [2020-04-17 23:04:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4628 states. [2020-04-17 23:04:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 10840 transitions. [2020-04-17 23:04:59,727 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 10840 transitions. Word has length 73 [2020-04-17 23:04:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 23:04:59,727 INFO L479 AbstractCegarLoop]: Abstraction has 4628 states and 10840 transitions. [2020-04-17 23:04:59,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-17 23:04:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 10840 transitions. [2020-04-17 23:04:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-04-17 23:04:59,731 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 23:04:59,731 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 23:04:59,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:04:59,935 INFO L427 AbstractCegarLoop]: === Iteration 54 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 23:04:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 23:04:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash 907547604, now seen corresponding path program 8 times [2020-04-17 23:04:59,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 23:04:59,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763321047] [2020-04-17 23:04:59,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 23:04:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 23:05:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 23:05:01,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763321047] [2020-04-17 23:05:01,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541605545] [2020-04-17 23:05:01,373 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:05:01,489 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 23:05:01,489 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 23:05:01,491 INFO L264 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 105 conjunts are in the unsatisfiable core [2020-04-17 23:05:01,493 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 23:05:01,497 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2020-04-17 23:05:01,497 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 23:05:01,537 INFO L619 ElimStorePlain]: treesize reduction 30, result has 47.4 percent of original size [2020-04-17 23:05:01,537 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 23:05:01,537 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:11 [2020-04-17 23:05:01,886 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 23:05:01,887 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:01,897 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:05:01,897 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 23:05:01,898 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:29 [2020-04-17 23:05:02,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:05:02,271 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 23:05:02,271 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:02,289 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:05:02,289 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 23:05:02,290 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 23:05:02,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:05:02,615 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 23:05:02,616 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:02,632 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:05:02,633 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 23:05:02,633 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 23:05:02,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 23:05:02,977 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 23:05:02,978 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:02,996 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:05:02,997 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 23:05:02,997 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:27 [2020-04-17 23:05:03,158 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 23:05:03,159 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:03,172 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 23:05:03,172 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 23:05:03,172 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:34 [2020-04-17 23:05:04,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 23:05:04,133 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 23:05:04,133 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:04,137 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 23:05:04,138 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 23:05:04,156 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-17 23:05:04,157 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 23:05:04,157 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:92, output treesize:11 [2020-04-17 23:05:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 23:05:04,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 23:05:04,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33] total 70 [2020-04-17 23:05:04,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851212996] [2020-04-17 23:05:04,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-04-17 23:05:04,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 23:05:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-04-17 23:05:04,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=4852, Unknown=0, NotChecked=0, Total=5112 [2020-04-17 23:05:04,299 INFO L87 Difference]: Start difference. First operand 4628 states and 10840 transitions. Second operand 72 states. [2020-04-17 23:05:04,908 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-04-17 23:05:05,218 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-04-17 23:05:05,551 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-04-17 23:05:06,044 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 23:05:06,397 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-04-17 23:05:06,597 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-04-17 23:05:06,878 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-04-17 23:05:07,226 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-04-17 23:05:07,482 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-04-17 23:05:08,072 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-04-17 23:05:08,531 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-04-17 23:05:08,911 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-04-17 23:05:09,149 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-04-17 23:05:09,421 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-04-17 23:05:09,681 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-04-17 23:05:09,945 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-04-17 23:05:10,227 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-04-17 23:05:10,476 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-04-17 23:05:10,823 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-04-17 23:05:11,359 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-04-17 23:05:11,919 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-04-17 23:05:12,191 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-04-17 23:05:12,501 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-04-17 23:05:12,781 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-04-17 23:05:13,337 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-04-17 23:05:13,663 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-04-17 23:05:13,927 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-04-17 23:05:14,373 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-04-17 23:05:14,669 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2020-04-17 23:05:14,919 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-04-17 23:05:15,128 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-04-17 23:05:15,578 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-04-17 23:05:15,874 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-04-17 23:05:16,096 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-04-17 23:05:16,417 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-04-17 23:05:16,615 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-04-17 23:05:16,804 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-04-17 23:05:17,179 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-04-17 23:05:17,403 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-04-17 23:05:17,750 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-04-17 23:05:18,031 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-04-17 23:05:18,300 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2020-04-17 23:05:18,515 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-04-17 23:05:18,737 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-04-17 23:05:19,195 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-04-17 23:05:19,732 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-04-17 23:05:20,062 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-04-17 23:05:20,396 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-04-17 23:05:20,683 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-04-17 23:05:21,158 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-04-17 23:05:21,550 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-04-17 23:05:21,887 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-04-17 23:05:22,162 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-04-17 23:05:22,608 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2020-04-17 23:05:22,903 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-04-17 23:05:23,173 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-04-17 23:05:23,474 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-04-17 23:05:23,638 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-04-17 23:05:24,102 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-04-17 23:05:24,405 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-04-17 23:05:24,635 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2020-04-17 23:05:24,965 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-04-17 23:05:25,275 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-04-17 23:05:25,457 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-04-17 23:05:25,842 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-04-17 23:05:26,073 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-04-17 23:05:26,433 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-04-17 23:05:26,771 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2020-04-17 23:05:27,025 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2020-04-17 23:05:27,289 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-04-17 23:05:27,512 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-04-17 23:05:27,833 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-04-17 23:05:28,011 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-04-17 23:05:28,293 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-04-17 23:05:28,696 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2020-04-17 23:05:29,085 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-04-17 23:05:29,345 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-04-17 23:05:29,625 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-04-17 23:05:29,907 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-04-17 23:05:30,241 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2020-04-17 23:05:30,573 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2020-04-17 23:05:31,122 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-04-17 23:05:31,411 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-04-17 23:05:31,850 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-04-17 23:05:32,134 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-04-17 23:05:32,675 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-04-17 23:05:32,950 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-04-17 23:05:33,500 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-04-17 23:05:33,796 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2020-04-17 23:05:34,062 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-04-17 23:05:34,361 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-04-17 23:05:34,573 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-04-17 23:05:34,796 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-04-17 23:05:35,056 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-04-17 23:05:35,353 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-04-17 23:05:35,581 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-04-17 23:05:35,901 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-04-17 23:05:36,383 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-04-17 23:05:36,579 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-04-17 23:05:36,847 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-04-17 23:05:37,079 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-04-17 23:05:37,438 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-04-17 23:05:37,758 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2020-04-17 23:05:38,060 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-04-17 23:05:38,347 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-04-17 23:05:38,619 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-04-17 23:05:38,875 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-04-17 23:05:39,323 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-04-17 23:05:39,679 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-04-17 23:05:39,978 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2020-04-17 23:05:40,213 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-04-17 23:05:40,576 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-04-17 23:05:40,932 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-04-17 23:05:41,218 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2020-04-17 23:05:41,452 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-04-17 23:05:41,817 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2020-04-17 23:05:42,108 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-04-17 23:05:42,543 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-04-17 23:05:42,870 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-04-17 23:05:43,503 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-04-17 23:05:43,758 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-04-17 23:05:44,142 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-04-17 23:05:44,615 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-04-17 23:05:44,894 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-04-17 23:05:45,144 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-04-17 23:05:45,447 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-04-17 23:05:45,669 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-17 23:05:45,919 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-04-17 23:05:46,152 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-17 23:05:46,507 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-04-17 23:05:46,718 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-04-17 23:05:47,038 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-04-17 23:05:47,407 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-04-17 23:05:47,799 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-04-17 23:05:47,979 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-04-17 23:05:48,284 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-04-17 23:05:48,700 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-04-17 23:05:48,985 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-04-17 23:05:49,283 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-04-17 23:05:49,670 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-04-17 23:05:49,947 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-04-17 23:05:50,561 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-04-17 23:05:50,932 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-04-17 23:05:51,243 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-04-17 23:05:51,538 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-04-17 23:05:51,716 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-04-17 23:05:52,315 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-04-17 23:05:52,618 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-04-17 23:05:52,834 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-04-17 23:05:53,205 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2020-04-17 23:05:53,458 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-04-17 23:05:53,681 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-04-17 23:05:53,883 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-17 23:05:54,087 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-04-17 23:05:54,402 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-04-17 23:05:54,822 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-04-17 23:05:55,178 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-04-17 23:05:55,498 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-17 23:05:55,828 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-04-17 23:05:56,068 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-04-17 23:05:56,444 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-04-17 23:05:57,051 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-04-17 23:05:57,534 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-04-17 23:05:57,755 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-04-17 23:05:58,153 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-04-17 23:05:58,585 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-04-17 23:05:59,071 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-04-17 23:05:59,369 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-04-17 23:05:59,657 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-04-17 23:06:00,229 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-04-17 23:06:00,542 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2020-04-17 23:06:00,830 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-04-17 23:06:01,031 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-04-17 23:06:01,499 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2020-04-17 23:06:01,715 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-04-17 23:06:02,052 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-17 23:06:02,302 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-04-17 23:06:02,528 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-04-17 23:06:02,738 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-04-17 23:06:02,963 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-04-17 23:06:03,371 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-04-17 23:06:03,673 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-04-17 23:06:04,055 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-04-17 23:06:04,397 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-04-17 23:06:04,568 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-04-17 23:06:05,080 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-04-17 23:06:05,339 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-04-17 23:06:05,743 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-04-17 23:06:06,223 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2020-04-17 23:06:06,979 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-04-17 23:06:07,237 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-04-17 23:06:07,441 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-04-17 23:06:07,616 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-04-17 23:06:08,047 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-04-17 23:06:08,306 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-04-17 23:06:08,541 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 Received shutdown request... [2020-04-17 23:06:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2020-04-17 23:06:08,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 23:06:08,780 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 23:06:08,785 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 23:06:08,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 11:06:08 BasicIcfg [2020-04-17 23:06:08,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 23:06:08,786 INFO L168 Benchmark]: Toolchain (without parser) took 251133.40 ms. Allocated memory was 136.3 MB in the beginning and 1.1 GB in the end (delta: 938.5 MB). Free memory was 99.1 MB in the beginning and 736.3 MB in the end (delta: -637.2 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,787 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.98 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 97.1 MB in the beginning and 127.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.90 ms. Allocated memory is still 199.2 MB. Free memory was 127.8 MB in the beginning and 124.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,787 INFO L168 Benchmark]: Boogie Preprocessor took 35.16 ms. Allocated memory is still 199.2 MB. Free memory was 124.9 MB in the beginning and 123.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,788 INFO L168 Benchmark]: RCFGBuilder took 613.94 ms. Allocated memory is still 199.2 MB. Free memory was 123.5 MB in the beginning and 90.7 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,788 INFO L168 Benchmark]: TraceAbstraction took 249525.62 ms. Allocated memory was 199.2 MB in the beginning and 1.1 GB in the end (delta: 875.6 MB). Free memory was 90.7 MB in the beginning and 736.3 MB in the end (delta: -645.5 MB). Peak memory consumption was 230.0 MB. Max. memory is 7.1 GB. [2020-04-17 23:06:08,789 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 860.98 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 97.1 MB in the beginning and 127.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.90 ms. Allocated memory is still 199.2 MB. Free memory was 127.8 MB in the beginning and 124.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.16 ms. Allocated memory is still 199.2 MB. Free memory was 124.9 MB in the beginning and 123.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 613.94 ms. Allocated memory is still 199.2 MB. Free memory was 123.5 MB in the beginning and 90.7 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249525.62 ms. Allocated memory was 199.2 MB in the beginning and 1.1 GB in the end (delta: 875.6 MB). Free memory was 90.7 MB in the beginning and 736.3 MB in the end (delta: -645.5 MB). Peak memory consumption was 230.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.7s, 133 ProgramPointsBefore, 40 ProgramPointsAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 3038 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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 (4628states) and FLOYD_HOARE automaton (currently 250 states, 72 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 320 known predicates. - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (4628states) and FLOYD_HOARE automaton (currently 250 states, 72 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 320 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 127 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 249.3s, OverallIterations: 54, TraceHistogramMax: 10, AutomataDifference: 191.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 3335 SDtfs, 29101 SDslu, 54206 SDs, 0 SdLazy, 50513 SolverSat, 5088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4816 GetRequests, 2466 SyntacticMatches, 5 SemanticMatches, 2344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92321 ImplicationChecksByTransitivity, 151.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4628occurred in iteration=53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 53 MinimizatonAttempts, 58148 StatesRemovedByMinimization, 52 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 5252 NumberOfCodeBlocks, 5213 NumberOfCodeBlocksAsserted, 233 NumberOfCheckSat, 5149 ConstructedInterpolants, 312 QuantifiedInterpolants, 1956581 SizeOfPredicates, 638 NumberOfNonLiveVariables, 17929 ConjunctsInSsa, 1251 ConjunctsInUnsatCore, 103 InterpolantComputations, 9 PerfectInterpolantSequences, 1106/10014 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