/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:41:19,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:41:19,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:41:19,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:41:19,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:41:19,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:41:19,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:41:19,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:41:19,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:41:19,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:41:19,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:41:19,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:41:19,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:41:19,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:41:19,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:41:19,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:41:19,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:41:19,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:41:19,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:41:19,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:41:19,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:41:19,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:41:19,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:41:19,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:41:19,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 08:41:19,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 08:41:19,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 08:41:19,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 08:41:19,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 08:41:19,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 08:41:19,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:41:19,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:41:19,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:41:19,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:41:19,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:41:19,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:41:19,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:41:19,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:41:19,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:41:19,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:41:19,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:41:19,214 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-NoLbe.epf [2019-12-27 08:41:19,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:41:19,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:41:19,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:41:19,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:41:19,250 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:41:19,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:41:19,251 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:41:19,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:41:19,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:41:19,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:41:19,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:41:19,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:41:19,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:41:19,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:41:19,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:41:19,255 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:41:19,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:41:19,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:41:19,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:41:19,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:41:19,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:41:19,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:41:19,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:41:19,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:41:19,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:41:19,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:41:19,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:41:19,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 08:41:19,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:41:19,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:41:19,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:41:19,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:41:19,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:41:19,573 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:41:19,573 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:41:19,574 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2019-12-27 08:41:19,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec2f53f9/c011135f529841619593baff21ab7897/FLAGf70962b4b [2019-12-27 08:41:20,204 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:41:20,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2019-12-27 08:41:20,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec2f53f9/c011135f529841619593baff21ab7897/FLAGf70962b4b [2019-12-27 08:41:20,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec2f53f9/c011135f529841619593baff21ab7897 [2019-12-27 08:41:20,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:41:20,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:41:20,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:41:20,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:41:20,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:41:20,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:41:20" (1/1) ... [2019-12-27 08:41:20,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b065a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:20, skipping insertion in model container [2019-12-27 08:41:20,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:41:20" (1/1) ... [2019-12-27 08:41:20,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:41:20,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:41:21,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:41:21,064 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:41:21,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:41:21,204 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:41:21,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21 WrapperNode [2019-12-27 08:41:21,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:41:21,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:41:21,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:41:21,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:41:21,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:41:21,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:41:21,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:41:21,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:41:21,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (1/1) ... [2019-12-27 08:41:21,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:41:21,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:41:21,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:41:21,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:41:21,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (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 [2019-12-27 08:41:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-12-27 08:41:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-12-27 08:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-12-27 08:41:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-12-27 08:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 08:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 08:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:41:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:41:21,354 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 08:41:21,704 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:41:21,704 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 08:41:21,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:41:21 BoogieIcfgContainer [2019-12-27 08:41:21,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:41:21,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:41:21,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:41:21,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:41:21,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:41:20" (1/3) ... [2019-12-27 08:41:21,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b1bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:41:21, skipping insertion in model container [2019-12-27 08:41:21,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:41:21" (2/3) ... [2019-12-27 08:41:21,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b1bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:41:21, skipping insertion in model container [2019-12-27 08:41:21,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:41:21" (3/3) ... [2019-12-27 08:41:21,714 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2019-12-27 08:41:21,724 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:41:21,724 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:41:21,730 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:41:21,731 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:41:21,756 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,756 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,756 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,757 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,757 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,757 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,758 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,758 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,758 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,759 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,759 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,759 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,759 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,760 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,760 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,760 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,761 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,762 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,762 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,762 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,762 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,763 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,763 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,763 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,764 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,764 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,764 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,764 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,768 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,768 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,769 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,769 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,769 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,769 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,774 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,775 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,775 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,775 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,775 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,776 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:41:21,787 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 08:41:21,803 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:41:21,803 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:41:21,804 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:41:21,804 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:41:21,804 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:41:21,804 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:41:21,804 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:41:21,804 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:41:21,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 51 transitions [2019-12-27 08:41:21,892 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-12-27 08:41:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-12-27 08:41:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-27 08:41:21,904 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:21,905 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:21,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -910010, now seen corresponding path program 1 times [2019-12-27 08:41:21,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:21,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542291134] [2019-12-27 08:41:21,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:22,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542291134] [2019-12-27 08:41:22,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:22,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:22,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478172462] [2019-12-27 08:41:22,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:22,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:22,290 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-12-27 08:41:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:22,467 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-12-27 08:41:22,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:41:22,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-12-27 08:41:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:22,492 INFO L225 Difference]: With dead ends: 1778 [2019-12-27 08:41:22,492 INFO L226 Difference]: Without dead ends: 500 [2019-12-27 08:41:22,494 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 08:41:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-12-27 08:41:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-12-27 08:41:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-12-27 08:41:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-12-27 08:41:22,590 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-12-27 08:41:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:22,591 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-12-27 08:41:22,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-12-27 08:41:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:41:22,594 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:22,595 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:22,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:22,595 INFO L82 PathProgramCache]: Analyzing trace with hash 723642448, now seen corresponding path program 1 times [2019-12-27 08:41:22,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:22,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944497232] [2019-12-27 08:41:22,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:22,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944497232] [2019-12-27 08:41:22,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:22,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:22,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158374182] [2019-12-27 08:41:22,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:22,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:22,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:22,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:22,733 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-12-27 08:41:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:22,820 INFO L93 Difference]: Finished difference Result 465 states and 1147 transitions. [2019-12-27 08:41:22,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:41:22,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-27 08:41:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:22,823 INFO L225 Difference]: With dead ends: 465 [2019-12-27 08:41:22,823 INFO L226 Difference]: Without dead ends: 344 [2019-12-27 08:41:22,824 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-27 08:41:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-12-27 08:41:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 320. [2019-12-27 08:41:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-12-27 08:41:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 815 transitions. [2019-12-27 08:41:22,842 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 815 transitions. Word has length 23 [2019-12-27 08:41:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:22,843 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 815 transitions. [2019-12-27 08:41:22,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 815 transitions. [2019-12-27 08:41:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:41:22,845 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:22,845 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:22,845 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -660572760, now seen corresponding path program 1 times [2019-12-27 08:41:22,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:22,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482097597] [2019-12-27 08:41:22,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:22,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482097597] [2019-12-27 08:41:22,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:22,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-27 08:41:22,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198869581] [2019-12-27 08:41:22,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:41:22,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:22,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:41:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:41:22,966 INFO L87 Difference]: Start difference. First operand 320 states and 815 transitions. Second operand 5 states. [2019-12-27 08:41:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:23,044 INFO L93 Difference]: Finished difference Result 421 states and 1017 transitions. [2019-12-27 08:41:23,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:41:23,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-12-27 08:41:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:23,048 INFO L225 Difference]: With dead ends: 421 [2019-12-27 08:41:23,048 INFO L226 Difference]: Without dead ends: 291 [2019-12-27 08:41:23,048 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-27 08:41:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-12-27 08:41:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2019-12-27 08:41:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-12-27 08:41:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 715 transitions. [2019-12-27 08:41:23,061 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 715 transitions. Word has length 23 [2019-12-27 08:41:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:23,062 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 715 transitions. [2019-12-27 08:41:23,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:41:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 715 transitions. [2019-12-27 08:41:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 08:41:23,068 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:23,068 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:23,068 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash -962769584, now seen corresponding path program 1 times [2019-12-27 08:41:23,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:23,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310962559] [2019-12-27 08:41:23,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:23,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310962559] [2019-12-27 08:41:23,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:23,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-27 08:41:23,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754559438] [2019-12-27 08:41:23,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:41:23,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:23,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:41:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:41:23,214 INFO L87 Difference]: Start difference. First operand 291 states and 715 transitions. Second operand 6 states. [2019-12-27 08:41:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:23,334 INFO L93 Difference]: Finished difference Result 438 states and 1058 transitions. [2019-12-27 08:41:23,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 08:41:23,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-27 08:41:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:23,337 INFO L225 Difference]: With dead ends: 438 [2019-12-27 08:41:23,337 INFO L226 Difference]: Without dead ends: 310 [2019-12-27 08:41:23,337 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:41:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-12-27 08:41:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 300. [2019-12-27 08:41:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-12-27 08:41:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 733 transitions. [2019-12-27 08:41:23,347 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 733 transitions. Word has length 26 [2019-12-27 08:41:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:23,347 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 733 transitions. [2019-12-27 08:41:23,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:41:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 733 transitions. [2019-12-27 08:41:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 08:41:23,349 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:23,349 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:23,349 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:23,350 INFO L82 PathProgramCache]: Analyzing trace with hash -971706884, now seen corresponding path program 2 times [2019-12-27 08:41:23,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:23,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943445478] [2019-12-27 08:41:23,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:23,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943445478] [2019-12-27 08:41:23,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:41:23,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-27 08:41:23,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855241262] [2019-12-27 08:41:23,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:41:23,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:23,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:41:23,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:41:23,473 INFO L87 Difference]: Start difference. First operand 300 states and 733 transitions. Second operand 6 states. [2019-12-27 08:41:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:23,566 INFO L93 Difference]: Finished difference Result 457 states and 1096 transitions. [2019-12-27 08:41:23,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 08:41:23,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-27 08:41:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:23,569 INFO L225 Difference]: With dead ends: 457 [2019-12-27 08:41:23,569 INFO L226 Difference]: Without dead ends: 320 [2019-12-27 08:41:23,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-27 08:41:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-12-27 08:41:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-12-27 08:41:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-12-27 08:41:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-12-27 08:41:23,582 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-12-27 08:41:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:23,582 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-12-27 08:41:23,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:41:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-12-27 08:41:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 08:41:23,584 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:23,584 INFO L411 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, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:23,584 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -327915495, now seen corresponding path program 1 times [2019-12-27 08:41:23,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:23,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474738572] [2019-12-27 08:41:23,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:23,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474738572] [2019-12-27 08:41:23,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747676113] [2019-12-27 08:41:23,686 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 [2019-12-27 08:41:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:23,763 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:41:23,770 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:23,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:23,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:23,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:23,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:23,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-27 08:41:23,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100678785] [2019-12-27 08:41:23,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:41:23,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:23,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:41:23,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:41:23,855 INFO L87 Difference]: Start difference. First operand 320 states and 773 transitions. Second operand 8 states. [2019-12-27 08:41:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:23,983 INFO L93 Difference]: Finished difference Result 565 states and 1361 transitions. [2019-12-27 08:41:23,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-27 08:41:23,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-27 08:41:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:23,988 INFO L225 Difference]: With dead ends: 565 [2019-12-27 08:41:23,989 INFO L226 Difference]: Without dead ends: 376 [2019-12-27 08:41:23,990 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-12-27 08:41:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-12-27 08:41:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2019-12-27 08:41:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-12-27 08:41:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 865 transitions. [2019-12-27 08:41:24,012 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 865 transitions. Word has length 30 [2019-12-27 08:41:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:24,013 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 865 transitions. [2019-12-27 08:41:24,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:41:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 865 transitions. [2019-12-27 08:41:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 08:41:24,016 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:24,016 INFO L411 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, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:24,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:24,228 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:24,228 INFO L82 PathProgramCache]: Analyzing trace with hash -243930643, now seen corresponding path program 1 times [2019-12-27 08:41:24,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:24,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870262163] [2019-12-27 08:41:24,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:24,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870262163] [2019-12-27 08:41:24,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178786349] [2019-12-27 08:41:24,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:24,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:41:24,373 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:24,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:24,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:24,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:24,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-27 08:41:24,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513308410] [2019-12-27 08:41:24,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:41:24,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:41:24,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:41:24,410 INFO L87 Difference]: Start difference. First operand 364 states and 865 transitions. Second operand 8 states. [2019-12-27 08:41:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:24,516 INFO L93 Difference]: Finished difference Result 523 states and 1228 transitions. [2019-12-27 08:41:24,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-27 08:41:24,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-27 08:41:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:24,519 INFO L225 Difference]: With dead ends: 523 [2019-12-27 08:41:24,519 INFO L226 Difference]: Without dead ends: 392 [2019-12-27 08:41:24,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-12-27 08:41:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2019-12-27 08:41:24,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 380. [2019-12-27 08:41:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-12-27 08:41:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 897 transitions. [2019-12-27 08:41:24,535 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 897 transitions. Word has length 30 [2019-12-27 08:41:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:24,536 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 897 transitions. [2019-12-27 08:41:24,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:41:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 897 transitions. [2019-12-27 08:41:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-27 08:41:24,537 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:24,538 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:24,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:24,742 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1975292362, now seen corresponding path program 1 times [2019-12-27 08:41:24,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:24,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126194391] [2019-12-27 08:41:24,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:24,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126194391] [2019-12-27 08:41:24,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52499090] [2019-12-27 08:41:24,847 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 [2019-12-27 08:41:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:24,902 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 08:41:24,904 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:24,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:24,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:24,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:24,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-12-27 08:41:24,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681312017] [2019-12-27 08:41:24,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 08:41:24,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:24,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 08:41:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-27 08:41:24,950 INFO L87 Difference]: Start difference. First operand 380 states and 897 transitions. Second operand 9 states. [2019-12-27 08:41:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:25,104 INFO L93 Difference]: Finished difference Result 637 states and 1505 transitions. [2019-12-27 08:41:25,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-27 08:41:25,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2019-12-27 08:41:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:25,114 INFO L225 Difference]: With dead ends: 637 [2019-12-27 08:41:25,114 INFO L226 Difference]: Without dead ends: 448 [2019-12-27 08:41:25,115 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:41:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-12-27 08:41:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 354. [2019-12-27 08:41:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-12-27 08:41:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 841 transitions. [2019-12-27 08:41:25,127 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 841 transitions. Word has length 34 [2019-12-27 08:41:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:25,129 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 841 transitions. [2019-12-27 08:41:25,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 08:41:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 841 transitions. [2019-12-27 08:41:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 08:41:25,130 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:25,130 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:25,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:25,340 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1246329683, now seen corresponding path program 2 times [2019-12-27 08:41:25,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:25,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373500294] [2019-12-27 08:41:25,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:25,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373500294] [2019-12-27 08:41:25,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430370377] [2019-12-27 08:41:25,460 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 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 [2019-12-27 08:41:25,522 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:25,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:25,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-27 08:41:25,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:25,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:25,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:25,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:25,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:25,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-12-27 08:41:25,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49711036] [2019-12-27 08:41:25,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-27 08:41:25,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:25,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-27 08:41:25,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-27 08:41:25,560 INFO L87 Difference]: Start difference. First operand 354 states and 841 transitions. Second operand 10 states. [2019-12-27 08:41:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:25,765 INFO L93 Difference]: Finished difference Result 807 states and 1894 transitions. [2019-12-27 08:41:25,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-27 08:41:25,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-27 08:41:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:25,769 INFO L225 Difference]: With dead ends: 807 [2019-12-27 08:41:25,769 INFO L226 Difference]: Without dead ends: 512 [2019-12-27 08:41:25,769 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:41:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2019-12-27 08:41:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 373. [2019-12-27 08:41:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-12-27 08:41:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 879 transitions. [2019-12-27 08:41:25,781 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 879 transitions. Word has length 38 [2019-12-27 08:41:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:25,782 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 879 transitions. [2019-12-27 08:41:25,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-27 08:41:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 879 transitions. [2019-12-27 08:41:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-12-27 08:41:25,783 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:25,783 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:25,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:25,987 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:25,987 INFO L82 PathProgramCache]: Analyzing trace with hash 259200112, now seen corresponding path program 3 times [2019-12-27 08:41:25,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:25,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724435305] [2019-12-27 08:41:25,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:26,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724435305] [2019-12-27 08:41:26,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783439522] [2019-12-27 08:41:26,132 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:26,221 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-27 08:41:26,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:26,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 08:41:26,224 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:26,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:26,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-12-27 08:41:26,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757991114] [2019-12-27 08:41:26,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 08:41:26,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 08:41:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-12-27 08:41:26,262 INFO L87 Difference]: Start difference. First operand 373 states and 879 transitions. Second operand 11 states. [2019-12-27 08:41:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:26,459 INFO L93 Difference]: Finished difference Result 823 states and 1926 transitions. [2019-12-27 08:41:26,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-27 08:41:26,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-12-27 08:41:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:26,463 INFO L225 Difference]: With dead ends: 823 [2019-12-27 08:41:26,463 INFO L226 Difference]: Without dead ends: 480 [2019-12-27 08:41:26,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:41:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-12-27 08:41:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 362. [2019-12-27 08:41:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-12-27 08:41:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 857 transitions. [2019-12-27 08:41:26,475 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 857 transitions. Word has length 42 [2019-12-27 08:41:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:26,475 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 857 transitions. [2019-12-27 08:41:26,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 08:41:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 857 transitions. [2019-12-27 08:41:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-27 08:41:26,477 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:26,477 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:26,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:26,680 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1361267571, now seen corresponding path program 4 times [2019-12-27 08:41:26,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:26,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851048765] [2019-12-27 08:41:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:26,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851048765] [2019-12-27 08:41:26,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048698196] [2019-12-27 08:41:26,810 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 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 [2019-12-27 08:41:26,872 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:26,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:26,874 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 08:41:26,875 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:26,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:26,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:26,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-12-27 08:41:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563025921] [2019-12-27 08:41:26,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 08:41:26,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 08:41:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-12-27 08:41:26,908 INFO L87 Difference]: Start difference. First operand 362 states and 857 transitions. Second operand 12 states. [2019-12-27 08:41:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:27,101 INFO L93 Difference]: Finished difference Result 709 states and 1649 transitions. [2019-12-27 08:41:27,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-27 08:41:27,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-12-27 08:41:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:27,105 INFO L225 Difference]: With dead ends: 709 [2019-12-27 08:41:27,105 INFO L226 Difference]: Without dead ends: 496 [2019-12-27 08:41:27,106 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2019-12-27 08:41:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-12-27 08:41:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 381. [2019-12-27 08:41:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-12-27 08:41:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 895 transitions. [2019-12-27 08:41:27,118 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 895 transitions. Word has length 46 [2019-12-27 08:41:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:27,119 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 895 transitions. [2019-12-27 08:41:27,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 08:41:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 895 transitions. [2019-12-27 08:41:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-27 08:41:27,120 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:27,120 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:27,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:27,324 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash -316809046, now seen corresponding path program 5 times [2019-12-27 08:41:27,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:27,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280264475] [2019-12-27 08:41:27,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:27,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280264475] [2019-12-27 08:41:27,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273208803] [2019-12-27 08:41:27,484 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 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 [2019-12-27 08:41:27,580 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 08:41:27,581 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:27,582 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-27 08:41:27,594 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:27,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:27,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:27,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:27,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:27,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-12-27 08:41:27,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31338127] [2019-12-27 08:41:27,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 08:41:27,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 08:41:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-12-27 08:41:27,632 INFO L87 Difference]: Start difference. First operand 381 states and 895 transitions. Second operand 13 states. [2019-12-27 08:41:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:27,870 INFO L93 Difference]: Finished difference Result 769 states and 1769 transitions. [2019-12-27 08:41:27,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-27 08:41:27,872 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-12-27 08:41:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:27,876 INFO L225 Difference]: With dead ends: 769 [2019-12-27 08:41:27,876 INFO L226 Difference]: Without dead ends: 580 [2019-12-27 08:41:27,876 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2019-12-27 08:41:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-12-27 08:41:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 540. [2019-12-27 08:41:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-12-27 08:41:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1217 transitions. [2019-12-27 08:41:27,889 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1217 transitions. Word has length 50 [2019-12-27 08:41:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:27,890 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 1217 transitions. [2019-12-27 08:41:27,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 08:41:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1217 transitions. [2019-12-27 08:41:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-27 08:41:27,891 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:27,891 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:28,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:28,099 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1532488761, now seen corresponding path program 6 times [2019-12-27 08:41:28,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:28,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876233745] [2019-12-27 08:41:28,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:28,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876233745] [2019-12-27 08:41:28,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376976055] [2019-12-27 08:41:28,270 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 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 [2019-12-27 08:41:28,328 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 08:41:28,328 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:28,329 INFO L264 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-27 08:41:28,333 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:28,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:28,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:28,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:28,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:28,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-12-27 08:41:28,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322267162] [2019-12-27 08:41:28,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-27 08:41:28,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:28,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-27 08:41:28,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-27 08:41:28,376 INFO L87 Difference]: Start difference. First operand 540 states and 1217 transitions. Second operand 14 states. [2019-12-27 08:41:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:28,628 INFO L93 Difference]: Finished difference Result 813 states and 1857 transitions. [2019-12-27 08:41:28,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-27 08:41:28,629 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-12-27 08:41:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:28,633 INFO L225 Difference]: With dead ends: 813 [2019-12-27 08:41:28,633 INFO L226 Difference]: Without dead ends: 624 [2019-12-27 08:41:28,633 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2019-12-27 08:41:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-12-27 08:41:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 437. [2019-12-27 08:41:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-12-27 08:41:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1007 transitions. [2019-12-27 08:41:28,645 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1007 transitions. Word has length 54 [2019-12-27 08:41:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:28,645 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 1007 transitions. [2019-12-27 08:41:28,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-27 08:41:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1007 transitions. [2019-12-27 08:41:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-27 08:41:28,647 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:28,647 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:28,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:28,850 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1598172444, now seen corresponding path program 7 times [2019-12-27 08:41:28,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:28,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002395158] [2019-12-27 08:41:28,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:29,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002395158] [2019-12-27 08:41:29,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440044176] [2019-12-27 08:41:29,032 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 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 [2019-12-27 08:41:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:29,091 INFO L264 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-27 08:41:29,093 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:29,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:29,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:29,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-12-27 08:41:29,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725169769] [2019-12-27 08:41:29,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 08:41:29,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:29,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 08:41:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:41:29,124 INFO L87 Difference]: Start difference. First operand 437 states and 1007 transitions. Second operand 15 states. [2019-12-27 08:41:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:29,460 INFO L93 Difference]: Finished difference Result 951 states and 2182 transitions. [2019-12-27 08:41:29,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-27 08:41:29,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2019-12-27 08:41:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:29,464 INFO L225 Difference]: With dead ends: 951 [2019-12-27 08:41:29,464 INFO L226 Difference]: Without dead ends: 608 [2019-12-27 08:41:29,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2019-12-27 08:41:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-12-27 08:41:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 426. [2019-12-27 08:41:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-12-27 08:41:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 985 transitions. [2019-12-27 08:41:29,475 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 985 transitions. Word has length 58 [2019-12-27 08:41:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:29,476 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 985 transitions. [2019-12-27 08:41:29,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 08:41:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 985 transitions. [2019-12-27 08:41:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-27 08:41:29,477 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:29,477 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:29,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:29,681 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1675257599, now seen corresponding path program 8 times [2019-12-27 08:41:29,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:29,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945792499] [2019-12-27 08:41:29,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:29,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945792499] [2019-12-27 08:41:29,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155684869] [2019-12-27 08:41:29,838 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 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 [2019-12-27 08:41:29,891 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:29,892 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:29,893 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-27 08:41:29,894 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:29,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:29,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:29,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-12-27 08:41:29,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083443936] [2019-12-27 08:41:29,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-27 08:41:29,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:29,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-27 08:41:29,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-12-27 08:41:29,941 INFO L87 Difference]: Start difference. First operand 426 states and 985 transitions. Second operand 16 states. [2019-12-27 08:41:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:30,309 INFO L93 Difference]: Finished difference Result 853 states and 1937 transitions. [2019-12-27 08:41:30,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-27 08:41:30,310 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2019-12-27 08:41:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:30,313 INFO L225 Difference]: With dead ends: 853 [2019-12-27 08:41:30,313 INFO L226 Difference]: Without dead ends: 664 [2019-12-27 08:41:30,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2019-12-27 08:41:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2019-12-27 08:41:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 636. [2019-12-27 08:41:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-12-27 08:41:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1409 transitions. [2019-12-27 08:41:30,327 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1409 transitions. Word has length 62 [2019-12-27 08:41:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:30,328 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1409 transitions. [2019-12-27 08:41:30,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-27 08:41:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1409 transitions. [2019-12-27 08:41:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-27 08:41:30,329 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:30,330 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:30,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:30,533 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1915950306, now seen corresponding path program 9 times [2019-12-27 08:41:30,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:30,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570716019] [2019-12-27 08:41:30,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:30,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570716019] [2019-12-27 08:41:30,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550451776] [2019-12-27 08:41:30,715 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 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 [2019-12-27 08:41:30,782 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-12-27 08:41:30,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:30,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-27 08:41:30,786 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:30,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:30,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:30,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:30,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:30,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-12-27 08:41:30,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886053492] [2019-12-27 08:41:30,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-27 08:41:30,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:30,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-27 08:41:30,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-12-27 08:41:30,824 INFO L87 Difference]: Start difference. First operand 636 states and 1409 transitions. Second operand 17 states. [2019-12-27 08:41:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:31,164 INFO L93 Difference]: Finished difference Result 893 states and 2017 transitions. [2019-12-27 08:41:31,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-27 08:41:31,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-12-27 08:41:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:31,168 INFO L225 Difference]: With dead ends: 893 [2019-12-27 08:41:31,168 INFO L226 Difference]: Without dead ends: 704 [2019-12-27 08:41:31,169 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=664, Unknown=0, NotChecked=0, Total=930 [2019-12-27 08:41:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-12-27 08:41:31,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 482. [2019-12-27 08:41:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-12-27 08:41:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1097 transitions. [2019-12-27 08:41:31,181 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1097 transitions. Word has length 66 [2019-12-27 08:41:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:31,181 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 1097 transitions. [2019-12-27 08:41:31,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-27 08:41:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1097 transitions. [2019-12-27 08:41:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-27 08:41:31,182 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:31,182 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:31,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:31,386 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash -338738117, now seen corresponding path program 10 times [2019-12-27 08:41:31,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:31,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407037742] [2019-12-27 08:41:31,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:31,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407037742] [2019-12-27 08:41:31,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141177028] [2019-12-27 08:41:31,617 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 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 [2019-12-27 08:41:31,693 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:31,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:31,694 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-27 08:41:31,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:31,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:31,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:31,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:31,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:31,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-12-27 08:41:31,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333264018] [2019-12-27 08:41:31,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-27 08:41:31,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-27 08:41:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-12-27 08:41:31,756 INFO L87 Difference]: Start difference. First operand 482 states and 1097 transitions. Second operand 18 states. [2019-12-27 08:41:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:32,160 INFO L93 Difference]: Finished difference Result 1063 states and 2406 transitions. [2019-12-27 08:41:32,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-27 08:41:32,165 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2019-12-27 08:41:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:32,168 INFO L225 Difference]: With dead ends: 1063 [2019-12-27 08:41:32,168 INFO L226 Difference]: Without dead ends: 768 [2019-12-27 08:41:32,168 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2019-12-27 08:41:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-12-27 08:41:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 501. [2019-12-27 08:41:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-12-27 08:41:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1135 transitions. [2019-12-27 08:41:32,180 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1135 transitions. Word has length 70 [2019-12-27 08:41:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:32,180 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 1135 transitions. [2019-12-27 08:41:32,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-27 08:41:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1135 transitions. [2019-12-27 08:41:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-27 08:41:32,181 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:32,182 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:32,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:32,385 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash -37410472, now seen corresponding path program 11 times [2019-12-27 08:41:32,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:32,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401340553] [2019-12-27 08:41:32,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:32,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401340553] [2019-12-27 08:41:32,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264376231] [2019-12-27 08:41:32,568 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 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 [2019-12-27 08:41:32,627 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-27 08:41:32,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:32,628 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-27 08:41:32,629 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:32,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:32,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:32,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:32,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:32,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-12-27 08:41:32,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268219169] [2019-12-27 08:41:32,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-27 08:41:32,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:32,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-27 08:41:32,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-27 08:41:32,666 INFO L87 Difference]: Start difference. First operand 501 states and 1135 transitions. Second operand 19 states. [2019-12-27 08:41:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:33,132 INFO L93 Difference]: Finished difference Result 1079 states and 2438 transitions. [2019-12-27 08:41:33,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-27 08:41:33,132 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2019-12-27 08:41:33,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:33,136 INFO L225 Difference]: With dead ends: 1079 [2019-12-27 08:41:33,137 INFO L226 Difference]: Without dead ends: 784 [2019-12-27 08:41:33,137 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 08:41:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-12-27 08:41:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 514. [2019-12-27 08:41:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2019-12-27 08:41:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1161 transitions. [2019-12-27 08:41:33,149 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1161 transitions. Word has length 74 [2019-12-27 08:41:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:33,149 INFO L462 AbstractCegarLoop]: Abstraction has 514 states and 1161 transitions. [2019-12-27 08:41:33,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-27 08:41:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1161 transitions. [2019-12-27 08:41:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-27 08:41:33,150 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:33,151 INFO L411 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:33,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:33,354 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:33,355 INFO L82 PathProgramCache]: Analyzing trace with hash -803269259, now seen corresponding path program 12 times [2019-12-27 08:41:33,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:33,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412967085] [2019-12-27 08:41:33,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:33,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412967085] [2019-12-27 08:41:33,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152736908] [2019-12-27 08:41:33,547 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 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 [2019-12-27 08:41:33,614 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-27 08:41:33,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:33,616 INFO L264 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-27 08:41:33,617 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:33,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:33,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:33,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:33,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:33,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-12-27 08:41:33,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805863022] [2019-12-27 08:41:33,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-27 08:41:33,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-27 08:41:33,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:41:33,652 INFO L87 Difference]: Start difference. First operand 514 states and 1161 transitions. Second operand 20 states. [2019-12-27 08:41:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:34,143 INFO L93 Difference]: Finished difference Result 1111 states and 2502 transitions. [2019-12-27 08:41:34,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-27 08:41:34,144 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2019-12-27 08:41:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:34,147 INFO L225 Difference]: With dead ends: 1111 [2019-12-27 08:41:34,147 INFO L226 Difference]: Without dead ends: 792 [2019-12-27 08:41:34,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1013, Unknown=0, NotChecked=0, Total=1406 [2019-12-27 08:41:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-12-27 08:41:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 764. [2019-12-27 08:41:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-12-27 08:41:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1665 transitions. [2019-12-27 08:41:34,161 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1665 transitions. Word has length 78 [2019-12-27 08:41:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:34,161 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1665 transitions. [2019-12-27 08:41:34,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-27 08:41:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1665 transitions. [2019-12-27 08:41:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-12-27 08:41:34,163 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:34,163 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:34,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:34,367 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:34,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash 539004306, now seen corresponding path program 13 times [2019-12-27 08:41:34,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:34,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861227949] [2019-12-27 08:41:34,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:34,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861227949] [2019-12-27 08:41:34,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705470456] [2019-12-27 08:41:34,625 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 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 [2019-12-27 08:41:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:34,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-27 08:41:34,700 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:34,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:34,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:34,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:34,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:34,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-12-27 08:41:34,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142127716] [2019-12-27 08:41:34,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-27 08:41:34,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-27 08:41:34,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-12-27 08:41:34,768 INFO L87 Difference]: Start difference. First operand 764 states and 1665 transitions. Second operand 21 states. [2019-12-27 08:41:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:35,318 INFO L93 Difference]: Finished difference Result 1147 states and 2574 transitions. [2019-12-27 08:41:35,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-27 08:41:35,319 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 82 [2019-12-27 08:41:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:35,323 INFO L225 Difference]: With dead ends: 1147 [2019-12-27 08:41:35,323 INFO L226 Difference]: Without dead ends: 852 [2019-12-27 08:41:35,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 08:41:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2019-12-27 08:41:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 796. [2019-12-27 08:41:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-12-27 08:41:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1729 transitions. [2019-12-27 08:41:35,338 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1729 transitions. Word has length 82 [2019-12-27 08:41:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:35,339 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1729 transitions. [2019-12-27 08:41:35,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-27 08:41:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1729 transitions. [2019-12-27 08:41:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-12-27 08:41:35,340 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:35,341 INFO L411 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:35,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:35,544 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:35,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1804537007, now seen corresponding path program 14 times [2019-12-27 08:41:35,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:35,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177467354] [2019-12-27 08:41:35,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:35,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177467354] [2019-12-27 08:41:35,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040596124] [2019-12-27 08:41:35,767 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 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 [2019-12-27 08:41:35,827 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:35,827 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:35,828 INFO L264 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-27 08:41:35,829 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:35,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:35,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:35,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:35,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:35,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-12-27 08:41:35,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100370470] [2019-12-27 08:41:35,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 08:41:35,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 08:41:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-12-27 08:41:35,898 INFO L87 Difference]: Start difference. First operand 796 states and 1729 transitions. Second operand 22 states. [2019-12-27 08:41:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:36,465 INFO L93 Difference]: Finished difference Result 1069 states and 2369 transitions. [2019-12-27 08:41:36,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-27 08:41:36,466 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2019-12-27 08:41:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:36,470 INFO L225 Difference]: With dead ends: 1069 [2019-12-27 08:41:36,470 INFO L226 Difference]: Without dead ends: 880 [2019-12-27 08:41:36,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=474, Invalid=1166, Unknown=0, NotChecked=0, Total=1640 [2019-12-27 08:41:36,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-12-27 08:41:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 565. [2019-12-27 08:41:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2019-12-27 08:41:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1263 transitions. [2019-12-27 08:41:36,484 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1263 transitions. Word has length 86 [2019-12-27 08:41:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:36,484 INFO L462 AbstractCegarLoop]: Abstraction has 565 states and 1263 transitions. [2019-12-27 08:41:36,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 08:41:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1263 transitions. [2019-12-27 08:41:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-12-27 08:41:36,486 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:36,486 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:36,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:36,690 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash 173610956, now seen corresponding path program 15 times [2019-12-27 08:41:36,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:36,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609050860] [2019-12-27 08:41:36,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:36,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609050860] [2019-12-27 08:41:36,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685349104] [2019-12-27 08:41:36,956 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 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 [2019-12-27 08:41:37,022 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-12-27 08:41:37,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:37,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-27 08:41:37,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:37,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:37,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:37,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:37,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:37,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-12-27 08:41:37,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653522060] [2019-12-27 08:41:37,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-27 08:41:37,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:37,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-27 08:41:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-12-27 08:41:37,060 INFO L87 Difference]: Start difference. First operand 565 states and 1263 transitions. Second operand 23 states. [2019-12-27 08:41:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:37,694 INFO L93 Difference]: Finished difference Result 1207 states and 2694 transitions. [2019-12-27 08:41:37,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-27 08:41:37,694 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 90 [2019-12-27 08:41:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:37,698 INFO L225 Difference]: With dead ends: 1207 [2019-12-27 08:41:37,698 INFO L226 Difference]: Without dead ends: 864 [2019-12-27 08:41:37,699 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=534, Invalid=1358, Unknown=0, NotChecked=0, Total=1892 [2019-12-27 08:41:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-12-27 08:41:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 554. [2019-12-27 08:41:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-12-27 08:41:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1241 transitions. [2019-12-27 08:41:37,710 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1241 transitions. Word has length 90 [2019-12-27 08:41:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:37,711 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 1241 transitions. [2019-12-27 08:41:37,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-27 08:41:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1241 transitions. [2019-12-27 08:41:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-12-27 08:41:37,713 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:37,713 INFO L411 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:37,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:37,923 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:37,923 INFO L82 PathProgramCache]: Analyzing trace with hash -963040791, now seen corresponding path program 16 times [2019-12-27 08:41:37,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:37,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155655834] [2019-12-27 08:41:37,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:38,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155655834] [2019-12-27 08:41:38,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206279247] [2019-12-27 08:41:38,190 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 [2019-12-27 08:41:38,253 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:38,254 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:38,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-27 08:41:38,256 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:38,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:38,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:38,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:38,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:38,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-12-27 08:41:38,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863348817] [2019-12-27 08:41:38,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-27 08:41:38,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-27 08:41:38,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2019-12-27 08:41:38,312 INFO L87 Difference]: Start difference. First operand 554 states and 1241 transitions. Second operand 24 states. [2019-12-27 08:41:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:38,848 INFO L93 Difference]: Finished difference Result 1093 states and 2417 transitions. [2019-12-27 08:41:38,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-27 08:41:38,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 94 [2019-12-27 08:41:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:38,856 INFO L225 Difference]: With dead ends: 1093 [2019-12-27 08:41:38,857 INFO L226 Difference]: Without dead ends: 880 [2019-12-27 08:41:38,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=1405, Unknown=0, NotChecked=0, Total=1980 [2019-12-27 08:41:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-12-27 08:41:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 573. [2019-12-27 08:41:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-12-27 08:41:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1279 transitions. [2019-12-27 08:41:38,876 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1279 transitions. Word has length 94 [2019-12-27 08:41:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:38,876 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 1279 transitions. [2019-12-27 08:41:38,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-27 08:41:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1279 transitions. [2019-12-27 08:41:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-12-27 08:41:38,878 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:38,878 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:39,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:39,082 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:39,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:39,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1209481210, now seen corresponding path program 17 times [2019-12-27 08:41:39,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:39,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105653652] [2019-12-27 08:41:39,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:39,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105653652] [2019-12-27 08:41:39,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061665964] [2019-12-27 08:41:39,368 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:39,437 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-12-27 08:41:39,438 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:39,438 INFO L264 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjunts are in the unsatisfiable core [2019-12-27 08:41:39,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:39,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:39,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:39,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:39,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:39,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-12-27 08:41:39,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22685800] [2019-12-27 08:41:39,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-27 08:41:39,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-27 08:41:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-12-27 08:41:39,481 INFO L87 Difference]: Start difference. First operand 573 states and 1279 transitions. Second operand 25 states. [2019-12-27 08:41:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:40,219 INFO L93 Difference]: Finished difference Result 1153 states and 2537 transitions. [2019-12-27 08:41:40,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-27 08:41:40,220 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2019-12-27 08:41:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:40,223 INFO L225 Difference]: With dead ends: 1153 [2019-12-27 08:41:40,223 INFO L226 Difference]: Without dead ends: 964 [2019-12-27 08:41:40,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=1532, Unknown=0, NotChecked=0, Total=2162 [2019-12-27 08:41:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-12-27 08:41:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 924. [2019-12-27 08:41:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2019-12-27 08:41:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1985 transitions. [2019-12-27 08:41:40,238 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1985 transitions. Word has length 98 [2019-12-27 08:41:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:40,238 INFO L462 AbstractCegarLoop]: Abstraction has 924 states and 1985 transitions. [2019-12-27 08:41:40,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-27 08:41:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1985 transitions. [2019-12-27 08:41:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-12-27 08:41:40,240 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:40,240 INFO L411 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:40,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:40,449 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -810062557, now seen corresponding path program 18 times [2019-12-27 08:41:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:40,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785421109] [2019-12-27 08:41:40,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:40,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785421109] [2019-12-27 08:41:40,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756374360] [2019-12-27 08:41:40,734 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 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 [2019-12-27 08:41:40,805 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-27 08:41:40,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:40,806 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-27 08:41:40,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:40,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:40,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:40,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:40,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:40,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-12-27 08:41:40,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555558523] [2019-12-27 08:41:40,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-12-27 08:41:40,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:40,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-12-27 08:41:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2019-12-27 08:41:40,878 INFO L87 Difference]: Start difference. First operand 924 states and 1985 transitions. Second operand 26 states. [2019-12-27 08:41:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:41,492 INFO L93 Difference]: Finished difference Result 1181 states and 2593 transitions. [2019-12-27 08:41:41,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-12-27 08:41:41,493 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 102 [2019-12-27 08:41:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:41,497 INFO L225 Difference]: With dead ends: 1181 [2019-12-27 08:41:41,497 INFO L226 Difference]: Without dead ends: 968 [2019-12-27 08:41:41,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=686, Invalid=1666, Unknown=0, NotChecked=0, Total=2352 [2019-12-27 08:41:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2019-12-27 08:41:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 956. [2019-12-27 08:41:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2019-12-27 08:41:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2049 transitions. [2019-12-27 08:41:41,511 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2049 transitions. Word has length 102 [2019-12-27 08:41:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:41,511 INFO L462 AbstractCegarLoop]: Abstraction has 956 states and 2049 transitions. [2019-12-27 08:41:41,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-12-27 08:41:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2049 transitions. [2019-12-27 08:41:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-27 08:41:41,513 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:41,513 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:41,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:41,717 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:41,718 INFO L82 PathProgramCache]: Analyzing trace with hash 172596800, now seen corresponding path program 19 times [2019-12-27 08:41:41,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:41,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835119710] [2019-12-27 08:41:41,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:42,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835119710] [2019-12-27 08:41:42,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544372871] [2019-12-27 08:41:42,023 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 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 [2019-12-27 08:41:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:42,086 INFO L264 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-27 08:41:42,088 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:42,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:42,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:42,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:42,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:42,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-12-27 08:41:42,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936120122] [2019-12-27 08:41:42,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-12-27 08:41:42,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-12-27 08:41:42,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2019-12-27 08:41:42,142 INFO L87 Difference]: Start difference. First operand 956 states and 2049 transitions. Second operand 27 states. [2019-12-27 08:41:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:42,914 INFO L93 Difference]: Finished difference Result 1339 states and 2958 transitions. [2019-12-27 08:41:42,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-12-27 08:41:42,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2019-12-27 08:41:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:42,920 INFO L225 Difference]: With dead ends: 1339 [2019-12-27 08:41:42,920 INFO L226 Difference]: Without dead ends: 1044 [2019-12-27 08:41:42,921 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=756, Invalid=1896, Unknown=0, NotChecked=0, Total=2652 [2019-12-27 08:41:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-12-27 08:41:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 988. [2019-12-27 08:41:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-12-27 08:41:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2113 transitions. [2019-12-27 08:41:42,936 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2113 transitions. Word has length 106 [2019-12-27 08:41:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:42,937 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 2113 transitions. [2019-12-27 08:41:42,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-12-27 08:41:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2113 transitions. [2019-12-27 08:41:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-12-27 08:41:42,939 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:42,939 INFO L411 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:43,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:43,143 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1533269597, now seen corresponding path program 20 times [2019-12-27 08:41:43,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:43,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713345220] [2019-12-27 08:41:43,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:43,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713345220] [2019-12-27 08:41:43,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485699323] [2019-12-27 08:41:43,525 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 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 [2019-12-27 08:41:43,594 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:43,594 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:43,595 INFO L264 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-27 08:41:43,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:43,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:43,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:43,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-12-27 08:41:43,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468426763] [2019-12-27 08:41:43,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 08:41:43,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 08:41:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2019-12-27 08:41:43,638 INFO L87 Difference]: Start difference. First operand 988 states and 2113 transitions. Second operand 28 states. [2019-12-27 08:41:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:44,373 INFO L93 Difference]: Finished difference Result 1245 states and 2721 transitions. [2019-12-27 08:41:44,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-12-27 08:41:44,373 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 110 [2019-12-27 08:41:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:44,378 INFO L225 Difference]: With dead ends: 1245 [2019-12-27 08:41:44,379 INFO L226 Difference]: Without dead ends: 1032 [2019-12-27 08:41:44,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=807, Invalid=1949, Unknown=0, NotChecked=0, Total=2756 [2019-12-27 08:41:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2019-12-27 08:41:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1020. [2019-12-27 08:41:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2019-12-27 08:41:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2177 transitions. [2019-12-27 08:41:44,395 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2177 transitions. Word has length 110 [2019-12-27 08:41:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:44,395 INFO L462 AbstractCegarLoop]: Abstraction has 1020 states and 2177 transitions. [2019-12-27 08:41:44,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 08:41:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2177 transitions. [2019-12-27 08:41:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-12-27 08:41:44,398 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:44,398 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:44,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:44,601 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash -923428230, now seen corresponding path program 21 times [2019-12-27 08:41:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:44,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136927688] [2019-12-27 08:41:44,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:44,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136927688] [2019-12-27 08:41:44,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532747229] [2019-12-27 08:41:44,961 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 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 [2019-12-27 08:41:45,046 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-12-27 08:41:45,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:45,048 INFO L264 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-27 08:41:45,050 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:45,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:45,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:45,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:45,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:45,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-12-27 08:41:45,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641061668] [2019-12-27 08:41:45,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-27 08:41:45,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-27 08:41:45,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2019-12-27 08:41:45,094 INFO L87 Difference]: Start difference. First operand 1020 states and 2177 transitions. Second operand 29 states. [2019-12-27 08:41:45,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:45,921 INFO L93 Difference]: Finished difference Result 1375 states and 3030 transitions. [2019-12-27 08:41:45,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-27 08:41:45,922 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 114 [2019-12-27 08:41:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:45,933 INFO L225 Difference]: With dead ends: 1375 [2019-12-27 08:41:45,933 INFO L226 Difference]: Without dead ends: 1056 [2019-12-27 08:41:45,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2019-12-27 08:41:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2019-12-27 08:41:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 650. [2019-12-27 08:41:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-12-27 08:41:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1433 transitions. [2019-12-27 08:41:45,954 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1433 transitions. Word has length 114 [2019-12-27 08:41:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:45,954 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1433 transitions. [2019-12-27 08:41:45,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-27 08:41:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1433 transitions. [2019-12-27 08:41:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-12-27 08:41:45,956 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:45,956 INFO L411 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:46,160 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:46,160 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash 605578647, now seen corresponding path program 22 times [2019-12-27 08:41:46,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:46,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427807934] [2019-12-27 08:41:46,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:46,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427807934] [2019-12-27 08:41:46,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246740983] [2019-12-27 08:41:46,589 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 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 [2019-12-27 08:41:46,656 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:46,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:46,658 INFO L264 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 31 conjunts are in the unsatisfiable core [2019-12-27 08:41:46,660 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:46,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:46,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:46,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:46,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:46,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-12-27 08:41:46,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027156441] [2019-12-27 08:41:46,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-27 08:41:46,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:46,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-27 08:41:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2019-12-27 08:41:46,709 INFO L87 Difference]: Start difference. First operand 650 states and 1433 transitions. Second operand 30 states. [2019-12-27 08:41:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:47,460 INFO L93 Difference]: Finished difference Result 1301 states and 2833 transitions. [2019-12-27 08:41:47,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-27 08:41:47,465 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 118 [2019-12-27 08:41:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:47,469 INFO L225 Difference]: With dead ends: 1301 [2019-12-27 08:41:47,469 INFO L226 Difference]: Without dead ends: 1112 [2019-12-27 08:41:47,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=938, Invalid=2254, Unknown=0, NotChecked=0, Total=3192 [2019-12-27 08:41:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-12-27 08:41:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1084. [2019-12-27 08:41:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2019-12-27 08:41:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 2305 transitions. [2019-12-27 08:41:47,487 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 2305 transitions. Word has length 118 [2019-12-27 08:41:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:47,487 INFO L462 AbstractCegarLoop]: Abstraction has 1084 states and 2305 transitions. [2019-12-27 08:41:47,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-27 08:41:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 2305 transitions. [2019-12-27 08:41:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-12-27 08:41:47,490 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:47,490 INFO L411 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:47,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:47,694 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:47,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1587102540, now seen corresponding path program 23 times [2019-12-27 08:41:47,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:47,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731895154] [2019-12-27 08:41:47,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:48,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731895154] [2019-12-27 08:41:48,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692950957] [2019-12-27 08:41:48,258 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 [2019-12-27 08:41:48,353 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-12-27 08:41:48,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:48,354 INFO L264 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-27 08:41:48,356 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:48,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:48,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:48,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:48,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:48,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-12-27 08:41:48,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303582109] [2019-12-27 08:41:48,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-27 08:41:48,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-27 08:41:48,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2019-12-27 08:41:48,425 INFO L87 Difference]: Start difference. First operand 1084 states and 2305 transitions. Second operand 31 states. [2019-12-27 08:41:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:49,268 INFO L93 Difference]: Finished difference Result 1341 states and 2913 transitions. [2019-12-27 08:41:49,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-12-27 08:41:49,268 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 122 [2019-12-27 08:41:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:49,277 INFO L225 Difference]: With dead ends: 1341 [2019-12-27 08:41:49,277 INFO L226 Difference]: Without dead ends: 1104 [2019-12-27 08:41:49,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2019-12-27 08:41:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2019-12-27 08:41:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 682. [2019-12-27 08:41:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-12-27 08:41:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1497 transitions. [2019-12-27 08:41:49,296 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1497 transitions. Word has length 122 [2019-12-27 08:41:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:49,296 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1497 transitions. [2019-12-27 08:41:49,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-27 08:41:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1497 transitions. [2019-12-27 08:41:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-12-27 08:41:49,299 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:49,299 INFO L411 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:49,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:49,505 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:49,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:49,505 INFO L82 PathProgramCache]: Analyzing trace with hash -900785455, now seen corresponding path program 24 times [2019-12-27 08:41:49,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:49,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840057978] [2019-12-27 08:41:49,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:49,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840057978] [2019-12-27 08:41:49,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047800378] [2019-12-27 08:41:49,961 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 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 [2019-12-27 08:41:50,044 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-12-27 08:41:50,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:50,045 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-27 08:41:50,048 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:50,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:50,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:50,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:50,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:50,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-12-27 08:41:50,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894992256] [2019-12-27 08:41:50,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-27 08:41:50,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:50,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-27 08:41:50,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2019-12-27 08:41:50,109 INFO L87 Difference]: Start difference. First operand 682 states and 1497 transitions. Second operand 32 states. [2019-12-27 08:41:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:50,970 INFO L93 Difference]: Finished difference Result 1365 states and 2961 transitions. [2019-12-27 08:41:50,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-12-27 08:41:50,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 126 [2019-12-27 08:41:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:50,973 INFO L225 Difference]: With dead ends: 1365 [2019-12-27 08:41:50,973 INFO L226 Difference]: Without dead ends: 1176 [2019-12-27 08:41:50,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1079, Invalid=2581, Unknown=0, NotChecked=0, Total=3660 [2019-12-27 08:41:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2019-12-27 08:41:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1148. [2019-12-27 08:41:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2019-12-27 08:41:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 2433 transitions. [2019-12-27 08:41:50,990 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 2433 transitions. Word has length 126 [2019-12-27 08:41:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:50,991 INFO L462 AbstractCegarLoop]: Abstraction has 1148 states and 2433 transitions. [2019-12-27 08:41:50,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-27 08:41:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 2433 transitions. [2019-12-27 08:41:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-12-27 08:41:50,993 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:50,993 INFO L411 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:51,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:51,197 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 655820014, now seen corresponding path program 25 times [2019-12-27 08:41:51,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:51,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144490928] [2019-12-27 08:41:51,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:51,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144490928] [2019-12-27 08:41:51,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496593934] [2019-12-27 08:41:51,599 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 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 [2019-12-27 08:41:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:51,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-27 08:41:51,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:51,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:51,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:51,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:51,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:51,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-12-27 08:41:51,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020475803] [2019-12-27 08:41:51,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-27 08:41:51,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:51,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-27 08:41:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2019-12-27 08:41:51,731 INFO L87 Difference]: Start difference. First operand 1148 states and 2433 transitions. Second operand 33 states. [2019-12-27 08:41:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:52,617 INFO L93 Difference]: Finished difference Result 1405 states and 3041 transitions. [2019-12-27 08:41:52,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-27 08:41:52,618 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 130 [2019-12-27 08:41:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:52,620 INFO L225 Difference]: With dead ends: 1405 [2019-12-27 08:41:52,621 INFO L226 Difference]: Without dead ends: 1168 [2019-12-27 08:41:52,623 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1154, Invalid=2752, Unknown=0, NotChecked=0, Total=3906 [2019-12-27 08:41:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2019-12-27 08:41:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 714. [2019-12-27 08:41:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2019-12-27 08:41:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1561 transitions. [2019-12-27 08:41:52,637 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1561 transitions. Word has length 130 [2019-12-27 08:41:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:52,637 INFO L462 AbstractCegarLoop]: Abstraction has 714 states and 1561 transitions. [2019-12-27 08:41:52,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-27 08:41:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1561 transitions. [2019-12-27 08:41:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-12-27 08:41:52,638 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:52,639 INFO L411 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:52,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:52,842 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash -729680373, now seen corresponding path program 26 times [2019-12-27 08:41:52,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:52,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962308128] [2019-12-27 08:41:52,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:53,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962308128] [2019-12-27 08:41:53,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816571844] [2019-12-27 08:41:53,334 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 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 [2019-12-27 08:41:53,410 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:41:53,410 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:53,411 INFO L264 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-27 08:41:53,414 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:53,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:53,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:53,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:53,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:53,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-12-27 08:41:53,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401161758] [2019-12-27 08:41:53,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-27 08:41:53,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-27 08:41:53,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2019-12-27 08:41:53,457 INFO L87 Difference]: Start difference. First operand 714 states and 1561 transitions. Second operand 34 states. [2019-12-27 08:41:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:54,414 INFO L93 Difference]: Finished difference Result 1429 states and 3089 transitions. [2019-12-27 08:41:54,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-27 08:41:54,414 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 134 [2019-12-27 08:41:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:54,416 INFO L225 Difference]: With dead ends: 1429 [2019-12-27 08:41:54,416 INFO L226 Difference]: Without dead ends: 1240 [2019-12-27 08:41:54,419 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1230, Invalid=2930, Unknown=0, NotChecked=0, Total=4160 [2019-12-27 08:41:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-12-27 08:41:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1212. [2019-12-27 08:41:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2019-12-27 08:41:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2561 transitions. [2019-12-27 08:41:54,435 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2561 transitions. Word has length 134 [2019-12-27 08:41:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:54,436 INFO L462 AbstractCegarLoop]: Abstraction has 1212 states and 2561 transitions. [2019-12-27 08:41:54,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-27 08:41:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2561 transitions. [2019-12-27 08:41:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-12-27 08:41:54,438 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:54,438 INFO L411 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:54,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:54,639 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash -746556632, now seen corresponding path program 27 times [2019-12-27 08:41:54,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:54,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762394166] [2019-12-27 08:41:54,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:55,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762394166] [2019-12-27 08:41:55,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857102203] [2019-12-27 08:41:55,201 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 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 [2019-12-27 08:41:55,297 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2019-12-27 08:41:55,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:55,299 INFO L264 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 36 conjunts are in the unsatisfiable core [2019-12-27 08:41:55,301 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:55,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:55,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:55,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:55,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:55,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-12-27 08:41:55,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170913607] [2019-12-27 08:41:55,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-27 08:41:55,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:55,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-27 08:41:55,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2019-12-27 08:41:55,368 INFO L87 Difference]: Start difference. First operand 1212 states and 2561 transitions. Second operand 35 states. [2019-12-27 08:41:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:56,450 INFO L93 Difference]: Finished difference Result 1469 states and 3169 transitions. [2019-12-27 08:41:56,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-27 08:41:56,450 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 138 [2019-12-27 08:41:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:56,452 INFO L225 Difference]: With dead ends: 1469 [2019-12-27 08:41:56,453 INFO L226 Difference]: Without dead ends: 1280 [2019-12-27 08:41:56,454 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1310, Invalid=3112, Unknown=0, NotChecked=0, Total=4422 [2019-12-27 08:41:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2019-12-27 08:41:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 770. [2019-12-27 08:41:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-12-27 08:41:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1673 transitions. [2019-12-27 08:41:56,468 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1673 transitions. Word has length 138 [2019-12-27 08:41:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:56,468 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1673 transitions. [2019-12-27 08:41:56,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-27 08:41:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1673 transitions. [2019-12-27 08:41:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-12-27 08:41:56,470 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:56,470 INFO L411 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:56,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:56,674 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:56,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1356138683, now seen corresponding path program 28 times [2019-12-27 08:41:56,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:56,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911508382] [2019-12-27 08:41:56,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:57,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911508382] [2019-12-27 08:41:57,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966428492] [2019-12-27 08:41:57,195 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 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 [2019-12-27 08:41:57,266 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:41:57,266 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:57,267 INFO L264 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 37 conjunts are in the unsatisfiable core [2019-12-27 08:41:57,270 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:57,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:57,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:57,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:57,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:57,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-12-27 08:41:57,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971310714] [2019-12-27 08:41:57,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 08:41:57,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 08:41:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 08:41:57,318 INFO L87 Difference]: Start difference. First operand 770 states and 1673 transitions. Second operand 36 states. [2019-12-27 08:41:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:41:58,424 INFO L93 Difference]: Finished difference Result 1623 states and 3526 transitions. [2019-12-27 08:41:58,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-27 08:41:58,425 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 142 [2019-12-27 08:41:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:41:58,427 INFO L225 Difference]: With dead ends: 1623 [2019-12-27 08:41:58,427 INFO L226 Difference]: Without dead ends: 1304 [2019-12-27 08:41:58,428 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1401, Invalid=3429, Unknown=0, NotChecked=0, Total=4830 [2019-12-27 08:41:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-12-27 08:41:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1276. [2019-12-27 08:41:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2019-12-27 08:41:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2689 transitions. [2019-12-27 08:41:58,449 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2689 transitions. Word has length 142 [2019-12-27 08:41:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:41:58,449 INFO L462 AbstractCegarLoop]: Abstraction has 1276 states and 2689 transitions. [2019-12-27 08:41:58,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 08:41:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2689 transitions. [2019-12-27 08:41:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-12-27 08:41:58,452 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:41:58,452 INFO L411 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:41:58,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:41:58,655 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:41:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:41:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash 102565730, now seen corresponding path program 29 times [2019-12-27 08:41:58,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:41:58,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671270385] [2019-12-27 08:41:58,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:41:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:41:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:59,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671270385] [2019-12-27 08:41:59,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141167216] [2019-12-27 08:41:59,318 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 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 [2019-12-27 08:41:59,455 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-12-27 08:41:59,456 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:41:59,459 INFO L264 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 38 conjunts are in the unsatisfiable core [2019-12-27 08:41:59,462 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:41:59,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:59,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:59,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:41:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:41:59,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:41:59,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-12-27 08:41:59,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188031009] [2019-12-27 08:41:59,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-12-27 08:41:59,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:41:59,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-12-27 08:41:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2019-12-27 08:41:59,571 INFO L87 Difference]: Start difference. First operand 1276 states and 2689 transitions. Second operand 37 states. [2019-12-27 08:42:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:00,756 INFO L93 Difference]: Finished difference Result 1659 states and 3598 transitions. [2019-12-27 08:42:00,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-12-27 08:42:00,757 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 146 [2019-12-27 08:42:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:00,759 INFO L225 Difference]: With dead ends: 1659 [2019-12-27 08:42:00,760 INFO L226 Difference]: Without dead ends: 1364 [2019-12-27 08:42:00,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1486, Invalid=3626, Unknown=0, NotChecked=0, Total=5112 [2019-12-27 08:42:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2019-12-27 08:42:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1308. [2019-12-27 08:42:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2019-12-27 08:42:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2753 transitions. [2019-12-27 08:42:00,780 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2753 transitions. Word has length 146 [2019-12-27 08:42:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:00,781 INFO L462 AbstractCegarLoop]: Abstraction has 1308 states and 2753 transitions. [2019-12-27 08:42:00,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-12-27 08:42:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2753 transitions. [2019-12-27 08:42:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-12-27 08:42:00,783 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:00,783 INFO L411 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:00,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:00,987 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1396433281, now seen corresponding path program 30 times [2019-12-27 08:42:00,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:00,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571208099] [2019-12-27 08:42:00,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:01,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571208099] [2019-12-27 08:42:01,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947528810] [2019-12-27 08:42:01,491 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 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 [2019-12-27 08:42:01,582 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-12-27 08:42:01,582 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:01,584 INFO L264 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-27 08:42:01,586 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:01,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:01,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:01,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:01,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:01,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-12-27 08:42:01,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813532056] [2019-12-27 08:42:01,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-27 08:42:01,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-27 08:42:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2019-12-27 08:42:01,641 INFO L87 Difference]: Start difference. First operand 1308 states and 2753 transitions. Second operand 38 states. [2019-12-27 08:42:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:02,756 INFO L93 Difference]: Finished difference Result 1565 states and 3361 transitions. [2019-12-27 08:42:02,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-12-27 08:42:02,757 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 150 [2019-12-27 08:42:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:02,761 INFO L225 Difference]: With dead ends: 1565 [2019-12-27 08:42:02,761 INFO L226 Difference]: Without dead ends: 1352 [2019-12-27 08:42:02,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1562, Invalid=3694, Unknown=0, NotChecked=0, Total=5256 [2019-12-27 08:42:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2019-12-27 08:42:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1340. [2019-12-27 08:42:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-12-27 08:42:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2817 transitions. [2019-12-27 08:42:02,781 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2817 transitions. Word has length 150 [2019-12-27 08:42:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:02,782 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 2817 transitions. [2019-12-27 08:42:02,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-27 08:42:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2817 transitions. [2019-12-27 08:42:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-12-27 08:42:02,784 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:02,784 INFO L411 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:02,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:02,988 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:02,988 INFO L82 PathProgramCache]: Analyzing trace with hash 73843100, now seen corresponding path program 31 times [2019-12-27 08:42:02,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:02,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606864861] [2019-12-27 08:42:02,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:03,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606864861] [2019-12-27 08:42:03,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078722640] [2019-12-27 08:42:03,537 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 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 [2019-12-27 08:42:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:03,612 INFO L264 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2019-12-27 08:42:03,613 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:03,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:03,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:03,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:03,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:03,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-12-27 08:42:03,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141390316] [2019-12-27 08:42:03,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-27 08:42:03,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-27 08:42:03,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1133, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 08:42:03,660 INFO L87 Difference]: Start difference. First operand 1340 states and 2817 transitions. Second operand 39 states. [2019-12-27 08:42:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:04,967 INFO L93 Difference]: Finished difference Result 1695 states and 3670 transitions. [2019-12-27 08:42:04,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-12-27 08:42:04,968 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 154 [2019-12-27 08:42:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:04,970 INFO L225 Difference]: With dead ends: 1695 [2019-12-27 08:42:04,970 INFO L226 Difference]: Without dead ends: 1376 [2019-12-27 08:42:04,971 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1662, Invalid=4038, Unknown=0, NotChecked=0, Total=5700 [2019-12-27 08:42:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-12-27 08:42:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 810. [2019-12-27 08:42:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-12-27 08:42:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1753 transitions. [2019-12-27 08:42:04,985 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1753 transitions. Word has length 154 [2019-12-27 08:42:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:04,986 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1753 transitions. [2019-12-27 08:42:04,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-27 08:42:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1753 transitions. [2019-12-27 08:42:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-12-27 08:42:04,987 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:04,987 INFO L411 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:05,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:05,188 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash 96955321, now seen corresponding path program 32 times [2019-12-27 08:42:05,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:05,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124120665] [2019-12-27 08:42:05,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:05,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124120665] [2019-12-27 08:42:05,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065486882] [2019-12-27 08:42:05,688 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 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 [2019-12-27 08:42:05,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:42:05,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:05,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-27 08:42:05,767 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:05,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:05,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:05,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:05,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:05,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-12-27 08:42:05,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870686253] [2019-12-27 08:42:05,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-27 08:42:05,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-27 08:42:05,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 08:42:05,829 INFO L87 Difference]: Start difference. First operand 810 states and 1753 transitions. Second operand 40 states. [2019-12-27 08:42:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:07,026 INFO L93 Difference]: Finished difference Result 1621 states and 3473 transitions. [2019-12-27 08:42:07,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-12-27 08:42:07,026 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 158 [2019-12-27 08:42:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:07,028 INFO L225 Difference]: With dead ends: 1621 [2019-12-27 08:42:07,029 INFO L226 Difference]: Without dead ends: 1432 [2019-12-27 08:42:07,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1743, Invalid=4109, Unknown=0, NotChecked=0, Total=5852 [2019-12-27 08:42:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-12-27 08:42:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1404. [2019-12-27 08:42:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2019-12-27 08:42:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2945 transitions. [2019-12-27 08:42:07,044 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2945 transitions. Word has length 158 [2019-12-27 08:42:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:07,044 INFO L462 AbstractCegarLoop]: Abstraction has 1404 states and 2945 transitions. [2019-12-27 08:42:07,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-27 08:42:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2945 transitions. [2019-12-27 08:42:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-12-27 08:42:07,046 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:07,046 INFO L411 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:07,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:07,247 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:07,247 INFO L82 PathProgramCache]: Analyzing trace with hash -103308842, now seen corresponding path program 33 times [2019-12-27 08:42:07,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:07,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343429857] [2019-12-27 08:42:07,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:07,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343429857] [2019-12-27 08:42:07,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947869904] [2019-12-27 08:42:07,817 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 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 [2019-12-27 08:42:07,931 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-12-27 08:42:07,931 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:07,933 INFO L264 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-27 08:42:07,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:07,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:07,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:07,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:08,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:08,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-12-27 08:42:08,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023942201] [2019-12-27 08:42:08,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-12-27 08:42:08,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:08,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-12-27 08:42:08,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1253, Unknown=0, NotChecked=0, Total=1640 [2019-12-27 08:42:08,010 INFO L87 Difference]: Start difference. First operand 1404 states and 2945 transitions. Second operand 41 states. [2019-12-27 08:42:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:09,332 INFO L93 Difference]: Finished difference Result 1661 states and 3553 transitions. [2019-12-27 08:42:09,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-12-27 08:42:09,333 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 162 [2019-12-27 08:42:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:09,335 INFO L225 Difference]: With dead ends: 1661 [2019-12-27 08:42:09,336 INFO L226 Difference]: Without dead ends: 1424 [2019-12-27 08:42:09,337 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1838, Invalid=4324, Unknown=0, NotChecked=0, Total=6162 [2019-12-27 08:42:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2019-12-27 08:42:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 842. [2019-12-27 08:42:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2019-12-27 08:42:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1817 transitions. [2019-12-27 08:42:09,381 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1817 transitions. Word has length 162 [2019-12-27 08:42:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:09,382 INFO L462 AbstractCegarLoop]: Abstraction has 842 states and 1817 transitions. [2019-12-27 08:42:09,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-12-27 08:42:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1817 transitions. [2019-12-27 08:42:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-12-27 08:42:09,384 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:09,385 INFO L411 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:09,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:09,589 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash -659628301, now seen corresponding path program 34 times [2019-12-27 08:42:09,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:09,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623525258] [2019-12-27 08:42:09,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:10,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623525258] [2019-12-27 08:42:10,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858097632] [2019-12-27 08:42:10,395 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 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 [2019-12-27 08:42:10,477 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:42:10,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:10,479 INFO L264 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 43 conjunts are in the unsatisfiable core [2019-12-27 08:42:10,480 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:10,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:10,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:10,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:10,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:10,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2019-12-27 08:42:10,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857829914] [2019-12-27 08:42:10,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-27 08:42:10,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:10,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-27 08:42:10,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2019-12-27 08:42:10,569 INFO L87 Difference]: Start difference. First operand 842 states and 1817 transitions. Second operand 42 states. [2019-12-27 08:42:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:11,846 INFO L93 Difference]: Finished difference Result 1685 states and 3601 transitions. [2019-12-27 08:42:11,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-12-27 08:42:11,846 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 166 [2019-12-27 08:42:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:11,847 INFO L225 Difference]: With dead ends: 1685 [2019-12-27 08:42:11,848 INFO L226 Difference]: Without dead ends: 1496 [2019-12-27 08:42:11,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1934, Invalid=4546, Unknown=0, NotChecked=0, Total=6480 [2019-12-27 08:42:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2019-12-27 08:42:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1468. [2019-12-27 08:42:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1468 states. [2019-12-27 08:42:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 3073 transitions. [2019-12-27 08:42:11,865 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 3073 transitions. Word has length 166 [2019-12-27 08:42:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:11,865 INFO L462 AbstractCegarLoop]: Abstraction has 1468 states and 3073 transitions. [2019-12-27 08:42:11,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-27 08:42:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 3073 transitions. [2019-12-27 08:42:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-12-27 08:42:11,867 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:11,867 INFO L411 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:12,068 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:12,068 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash -135682032, now seen corresponding path program 35 times [2019-12-27 08:42:12,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:12,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046301225] [2019-12-27 08:42:12,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:12,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046301225] [2019-12-27 08:42:12,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961227691] [2019-12-27 08:42:12,687 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 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 [2019-12-27 08:42:12,782 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-12-27 08:42:12,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:12,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 44 conjunts are in the unsatisfiable core [2019-12-27 08:42:12,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:12,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:12,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:12,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:12,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:12,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2019-12-27 08:42:12,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246706272] [2019-12-27 08:42:12,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 08:42:12,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 08:42:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 08:42:12,861 INFO L87 Difference]: Start difference. First operand 1468 states and 3073 transitions. Second operand 43 states. [2019-12-27 08:42:14,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:14,219 INFO L93 Difference]: Finished difference Result 1725 states and 3681 transitions. [2019-12-27 08:42:14,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-27 08:42:14,220 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 170 [2019-12-27 08:42:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:14,221 INFO L225 Difference]: With dead ends: 1725 [2019-12-27 08:42:14,221 INFO L226 Difference]: Without dead ends: 1536 [2019-12-27 08:42:14,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2034, Invalid=4772, Unknown=0, NotChecked=0, Total=6806 [2019-12-27 08:42:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2019-12-27 08:42:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 898. [2019-12-27 08:42:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2019-12-27 08:42:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1929 transitions. [2019-12-27 08:42:14,233 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1929 transitions. Word has length 170 [2019-12-27 08:42:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:14,233 INFO L462 AbstractCegarLoop]: Abstraction has 898 states and 1929 transitions. [2019-12-27 08:42:14,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 08:42:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1929 transitions. [2019-12-27 08:42:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-12-27 08:42:14,234 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:14,234 INFO L411 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:14,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:14,435 INFO L410 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash 703887405, now seen corresponding path program 36 times [2019-12-27 08:42:14,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:14,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927688246] [2019-12-27 08:42:14,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 0 proven. 1333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:15,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927688246] [2019-12-27 08:42:15,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650820268] [2019-12-27 08:42:15,382 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 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 [2019-12-27 08:42:15,474 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-12-27 08:42:15,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:15,476 INFO L264 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 45 conjunts are in the unsatisfiable core [2019-12-27 08:42:15,478 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:15,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:15,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:15,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 0 proven. 1333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:15,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:15,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2019-12-27 08:42:15,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390565359] [2019-12-27 08:42:15,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-27 08:42:15,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:15,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-27 08:42:15,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2019-12-27 08:42:15,560 INFO L87 Difference]: Start difference. First operand 898 states and 1929 transitions. Second operand 44 states. [2019-12-27 08:42:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:16,982 INFO L93 Difference]: Finished difference Result 1895 states and 4070 transitions. [2019-12-27 08:42:16,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-12-27 08:42:16,983 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 174 [2019-12-27 08:42:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:16,985 INFO L225 Difference]: With dead ends: 1895 [2019-12-27 08:42:16,985 INFO L226 Difference]: Without dead ends: 1600 [2019-12-27 08:42:16,986 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2145, Invalid=5165, Unknown=0, NotChecked=0, Total=7310 [2019-12-27 08:42:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2019-12-27 08:42:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 917. [2019-12-27 08:42:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2019-12-27 08:42:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1967 transitions. [2019-12-27 08:42:16,999 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1967 transitions. Word has length 174 [2019-12-27 08:42:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:16,999 INFO L462 AbstractCegarLoop]: Abstraction has 917 states and 1967 transitions. [2019-12-27 08:42:16,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-27 08:42:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1967 transitions. [2019-12-27 08:42:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-12-27 08:42:17,001 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:17,001 INFO L411 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:17,204 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:17,205 INFO L410 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -166276022, now seen corresponding path program 37 times [2019-12-27 08:42:17,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:17,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623738865] [2019-12-27 08:42:17,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:17,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623738865] [2019-12-27 08:42:17,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974440209] [2019-12-27 08:42:17,912 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 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 [2019-12-27 08:42:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:18,007 INFO L264 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 46 conjunts are in the unsatisfiable core [2019-12-27 08:42:18,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:18,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:18,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:18,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-27 08:42:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:18,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:42:18,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2019-12-27 08:42:18,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403533773] [2019-12-27 08:42:18,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-12-27 08:42:18,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-12-27 08:42:18,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2019-12-27 08:42:18,071 INFO L87 Difference]: Start difference. First operand 917 states and 1967 transitions. Second operand 45 states. [2019-12-27 08:42:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:19,676 INFO L93 Difference]: Finished difference Result 1813 states and 3857 transitions. [2019-12-27 08:42:19,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-12-27 08:42:19,676 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 178 [2019-12-27 08:42:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:19,677 INFO L225 Difference]: With dead ends: 1813 [2019-12-27 08:42:19,677 INFO L226 Difference]: Without dead ends: 1576 [2019-12-27 08:42:19,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2244, Invalid=5238, Unknown=0, NotChecked=0, Total=7482 [2019-12-27 08:42:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2019-12-27 08:42:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1548. [2019-12-27 08:42:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-12-27 08:42:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 3233 transitions. [2019-12-27 08:42:19,692 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 3233 transitions. Word has length 178 [2019-12-27 08:42:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:19,692 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 3233 transitions. [2019-12-27 08:42:19,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-12-27 08:42:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 3233 transitions. [2019-12-27 08:42:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-12-27 08:42:19,694 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:19,694 INFO L411 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:19,894 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:19,895 INFO L410 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash -468568217, now seen corresponding path program 38 times [2019-12-27 08:42:19,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:19,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175898353] [2019-12-27 08:42:19,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1425 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:20,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175898353] [2019-12-27 08:42:20,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949305868] [2019-12-27 08:42:20,636 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-12-27 08:42:20,720 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:42:20,721 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:20,722 INFO L264 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-27 08:42:20,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1483 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:20,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:42:20,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2019-12-27 08:42:20,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32897338] [2019-12-27 08:42:20,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 08:42:20,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 08:42:20,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2019-12-27 08:42:20,787 INFO L87 Difference]: Start difference. First operand 1548 states and 3233 transitions. Second operand 43 states. [2019-12-27 08:42:22,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:22,183 INFO L93 Difference]: Finished difference Result 13632 states and 27055 transitions. [2019-12-27 08:42:22,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-12-27 08:42:22,183 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2019-12-27 08:42:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:22,185 INFO L225 Difference]: With dead ends: 13632 [2019-12-27 08:42:22,185 INFO L226 Difference]: Without dead ends: 1536 [2019-12-27 08:42:22,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2209, Invalid=4931, Unknown=0, NotChecked=0, Total=7140 [2019-12-27 08:42:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2019-12-27 08:42:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1520. [2019-12-27 08:42:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1520 states. [2019-12-27 08:42:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2986 transitions. [2019-12-27 08:42:22,207 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2986 transitions. Word has length 182 [2019-12-27 08:42:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:22,207 INFO L462 AbstractCegarLoop]: Abstraction has 1520 states and 2986 transitions. [2019-12-27 08:42:22,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 08:42:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2986 transitions. [2019-12-27 08:42:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-12-27 08:42:22,210 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:42:22,210 INFO L411 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:42:22,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:22,414 INFO L410 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:42:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:42:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2016800993, now seen corresponding path program 39 times [2019-12-27 08:42:22,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:42:22,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261083250] [2019-12-27 08:42:22,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:42:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:42:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1352 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:23,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261083250] [2019-12-27 08:42:23,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042514745] [2019-12-27 08:42:23,103 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 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 [2019-12-27 08:42:23,208 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-12-27 08:42:23,208 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:42:23,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-27 08:42:23,214 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:42:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1483 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:42:23,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 08:42:23,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2019-12-27 08:42:23,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135593425] [2019-12-27 08:42:23,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 08:42:23,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:42:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 08:42:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2019-12-27 08:42:23,301 INFO L87 Difference]: Start difference. First operand 1520 states and 2986 transitions. Second operand 43 states. [2019-12-27 08:42:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:42:24,494 INFO L93 Difference]: Finished difference Result 13648 states and 25283 transitions. [2019-12-27 08:42:24,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-12-27 08:42:24,494 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2019-12-27 08:42:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:42:24,495 INFO L225 Difference]: With dead ends: 13648 [2019-12-27 08:42:24,495 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 08:42:24,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2209, Invalid=4931, Unknown=0, NotChecked=0, Total=7140 [2019-12-27 08:42:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 08:42:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 08:42:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 08:42:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 08:42:24,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 182 [2019-12-27 08:42:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:42:24,499 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 08:42:24,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 08:42:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 08:42:24,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 08:42:24,703 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:42:24,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:42:24 BasicIcfg [2019-12-27 08:42:24,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:42:24,711 INFO L168 Benchmark]: Toolchain (without parser) took 64206.69 ms. Allocated memory was 144.7 MB in the beginning and 631.2 MB in the end (delta: 486.5 MB). Free memory was 99.9 MB in the beginning and 528.4 MB in the end (delta: -428.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,712 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 144.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.41 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.4 MB in the beginning and 162.1 MB in the end (delta: -62.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,713 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 202.9 MB. Free memory was 162.1 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,713 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,713 INFO L168 Benchmark]: RCFGBuilder took 418.10 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 139.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,714 INFO L168 Benchmark]: TraceAbstraction took 63002.60 ms. Allocated memory was 202.9 MB in the beginning and 631.2 MB in the end (delta: 428.3 MB). Free memory was 138.7 MB in the beginning and 528.4 MB in the end (delta: -389.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2019-12-27 08:42:24,716 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 144.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.41 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.4 MB in the beginning and 162.1 MB in the end (delta: -62.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 202.9 MB. Free memory was 162.1 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.60 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.10 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 139.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 63002.60 ms. Allocated memory was 202.9 MB in the beginning and 631.2 MB in the end (delta: 428.3 MB). Free memory was 138.7 MB in the beginning and 528.4 MB in the end (delta: -389.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 1 error locations. Result: SAFE, OverallTime: 62.9s, OverallIterations: 46, TraceHistogramMax: 21, AutomataDifference: 31.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3316 SDtfs, 20626 SDslu, 31696 SDs, 0 SdLazy, 6194 SolverSat, 3451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6437 GetRequests, 4394 SyntacticMatches, 0 SemanticMatches, 2043 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22770 ImplicationChecksByTransitivity, 36.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1548occurred in iteration=44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 46 MinimizatonAttempts, 7509 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 8810 NumberOfCodeBlocks, 8810 NumberOfCodeBlocksAsserted, 308 NumberOfCheckSat, 8723 ConstructedInterpolants, 0 QuantifiedInterpolants, 3234363 SizeOfPredicates, 1019 NumberOfNonLiveVariables, 9881 ConjunctsInSsa, 1138 ConjunctsInUnsatCore, 87 InterpolantComputations, 7 PerfectInterpolantSequences, 5743/42528 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...