/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:52:01,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:52:01,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:52:01,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:52:01,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:52:01,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:52:01,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:52:01,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:52:01,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:52:01,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:52:01,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:52:01,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:52:01,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:52:01,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:52:01,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:52:01,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:52:01,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:52:01,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:52:01,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:52:01,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:52:01,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:52:01,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:52:01,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:52:01,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:52:01,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:52:01,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:52:01,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:52:01,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:52:01,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:52:01,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:52:01,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:52:01,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:52:01,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:52:01,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:52:01,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:52:01,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:52:01,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:52:01,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:52:01,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:52:01,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:52:01,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:52:01,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 11:52:01,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:52:01,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:52:01,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:52:01,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:52:01,251 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:52:01,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:52:01,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:52:01,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:52:01,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:52:01,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:52:01,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:52:01,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:52:01,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:52:01,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:52:01,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:52:01,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:52:01,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:52:01,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:52:01,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:52:01,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:52:01,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:52:01,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:52:01,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:52:01,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:52:01,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:52:01,256 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:52:01,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:52:01,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:52:01,256 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:52:01,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:52:01,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:52:01,553 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:52:01,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:52:01,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:52:01,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:52:01,568 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:52:01,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-18 11:52:01,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ba3465/0960d1bfdf1d4449aaff9a1f31aebbe5/FLAG8115db8c9 [2020-04-18 11:52:02,265 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:52:02,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-18 11:52:02,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ba3465/0960d1bfdf1d4449aaff9a1f31aebbe5/FLAG8115db8c9 [2020-04-18 11:52:02,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ba3465/0960d1bfdf1d4449aaff9a1f31aebbe5 [2020-04-18 11:52:02,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:52:02,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:52:02,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:02,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:52:02,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:52:02,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:02" (1/1) ... [2020-04-18 11:52:02,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdb4ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:02, skipping insertion in model container [2020-04-18 11:52:02,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:02" (1/1) ... [2020-04-18 11:52:02,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:52:02,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:52:03,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:03,160 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:52:03,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:03,444 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:52:03,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03 WrapperNode [2020-04-18 11:52:03,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:03,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:03,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:52:03,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:52:03,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:03,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:52:03,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:52:03,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:52:03,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... [2020-04-18 11:52:03,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:52:03,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:52:03,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:52:03,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:52:03,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:52:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 11:52:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 11:52:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 11:52:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 11:52:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:52:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:52:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:52:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:52:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 11:52:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 11:52:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:52:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:52:03,689 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:52:04,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:52:04,244 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-04-18 11:52:04,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:04 BoogieIcfgContainer [2020-04-18 11:52:04,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:52:04,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:52:04,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:52:04,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:52:04,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:52:02" (1/3) ... [2020-04-18 11:52:04,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbeead0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:04, skipping insertion in model container [2020-04-18 11:52:04,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:03" (2/3) ... [2020-04-18 11:52:04,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbeead0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:04, skipping insertion in model container [2020-04-18 11:52:04,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:04" (3/3) ... [2020-04-18 11:52:04,256 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-04-18 11:52:04,267 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:52:04,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:52:04,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 11:52:04,276 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:52:04,312 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,313 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,313 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,313 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,315 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,316 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,317 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,317 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,318 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,319 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,321 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,321 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,322 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,323 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,324 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,324 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,324 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,325 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,325 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,325 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,326 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,326 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,326 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,326 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,327 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,327 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,327 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,341 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,342 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,342 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,343 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,343 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,343 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,343 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,343 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,344 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,344 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,344 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,344 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,344 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,345 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,345 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,346 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,346 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,346 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,347 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,348 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,349 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,349 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,350 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,350 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,350 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,351 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,352 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,353 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,354 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,355 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,355 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,355 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,355 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,356 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,356 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,356 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,356 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,356 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,357 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,357 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,357 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,357 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,357 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,361 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,362 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,363 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,363 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,363 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,364 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,365 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,365 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,365 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,365 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,370 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,371 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,371 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,371 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,371 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,371 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,372 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,373 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,373 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,373 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,373 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,373 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,374 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:04,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 11:52:04,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:52:04,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:52:04,418 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:52:04,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:52:04,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:52:04,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:52:04,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:52:04,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:52:04,444 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 298 flow [2020-04-18 11:52:04,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-18 11:52:04,531 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-18 11:52:04,532 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:04,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-18 11:52:04,554 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-18 11:52:04,589 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-18 11:52:04,589 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:04,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-18 11:52:04,596 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-04-18 11:52:04,597 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:52:07,442 WARN L192 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-04-18 11:52:07,619 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-04-18 11:52:07,742 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-04-18 11:52:07,993 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-04-18 11:52:08,197 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-18 11:52:08,210 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7699 [2020-04-18 11:52:08,210 INFO L214 etLargeBlockEncoding]: Total number of compositions: 118 [2020-04-18 11:52:08,213 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-04-18 11:52:08,237 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-04-18 11:52:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-04-18 11:52:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:52:08,246 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:08,247 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:52:08,247 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,254 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 1 times [2020-04-18 11:52:08,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:08,262 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [278442574] [2020-04-18 11:52:08,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:08,289 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:52:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:52:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:52:08,290 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 2 times [2020-04-18 11:52:08,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:08,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507559131] [2020-04-18 11:52:08,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:08,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507559131] [2020-04-18 11:52:08,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:08,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:08,503 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:08,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:08,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:52:08,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:08,512 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:08,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,519 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:52:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:08,523 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:52:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:52:08,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:08,524 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [278442574] [2020-04-18 11:52:08,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:08,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:08,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [278442574] [2020-04-18 11:52:08,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:52:08,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:08,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,532 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-04-18 11:52:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:08,618 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-04-18 11:52:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:52:08,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:52:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:08,640 INFO L225 Difference]: With dead ends: 504 [2020-04-18 11:52:08,641 INFO L226 Difference]: Without dead ends: 460 [2020-04-18 11:52:08,642 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-04-18 11:52:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-04-18 11:52:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-18 11:52:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-04-18 11:52:08,736 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-04-18 11:52:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:08,736 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-04-18 11:52:08,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:52:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-04-18 11:52:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:52:08,737 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:08,737 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:08,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 1 times [2020-04-18 11:52:08,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:08,738 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [759671637] [2020-04-18 11:52:08,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:08,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:52:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:52:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:52:08,740 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 2 times [2020-04-18 11:52:08,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:08,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374306092] [2020-04-18 11:52:08,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:08,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374306092] [2020-04-18 11:52:08,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:08,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:08,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:08,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:08,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:52:08,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:08,851 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:08,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:08,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,852 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 11:52:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:08,853 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:52:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:52:08,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:08,854 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [759671637] [2020-04-18 11:52:08,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:08,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:08,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [759671637] [2020-04-18 11:52:08,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:52:08,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:08,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:08,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,856 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-04-18 11:52:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:08,872 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-04-18 11:52:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:52:08,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:52:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:08,876 INFO L225 Difference]: With dead ends: 464 [2020-04-18 11:52:08,876 INFO L226 Difference]: Without dead ends: 464 [2020-04-18 11:52:08,877 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-18 11:52:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-18 11:52:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-18 11:52:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-04-18 11:52:08,934 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-04-18 11:52:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:08,934 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-04-18 11:52:08,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:52:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-04-18 11:52:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:52:08,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:08,936 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:08,938 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,938 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 1 times [2020-04-18 11:52:08,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:08,939 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [939877625] [2020-04-18 11:52:08,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:08,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:52:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:52:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:52:08,941 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 2 times [2020-04-18 11:52:08,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:08,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393189156] [2020-04-18 11:52:08,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:09,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393189156] [2020-04-18 11:52:09,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396023141] [2020-04-18 11:52:09,089 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:09,201 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:52:09,201 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:09,203 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:52:09,208 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:09,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:52:09,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:52:09,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:09,251 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:09,252 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:52:09,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:09,280 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:09,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:52:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:52:09,281 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 7 states. [2020-04-18 11:52:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:09,307 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-04-18 11:52:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-04-18 11:52:09,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [939877625] [2020-04-18 11:52:09,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:09,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:52:09,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [939877625] [2020-04-18 11:52:09,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:52:09,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:52:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:52:09,312 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-04-18 11:52:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:09,448 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-04-18 11:52:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:52:09,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:52:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:09,459 INFO L225 Difference]: With dead ends: 866 [2020-04-18 11:52:09,460 INFO L226 Difference]: Without dead ends: 851 [2020-04-18 11:52:09,462 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:52:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-04-18 11:52:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-04-18 11:52:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-04-18 11:52:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-04-18 11:52:09,492 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-04-18 11:52:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:09,493 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-04-18 11:52:09,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:52:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-04-18 11:52:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:52:09,503 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:09,503 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:09,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:09,709 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 1 times [2020-04-18 11:52:09,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:09,711 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [101557839] [2020-04-18 11:52:09,711 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:09,713 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 114 transitions. [2020-04-18 11:52:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 11:52:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:52:09,714 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 2 times [2020-04-18 11:52:09,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069174800] [2020-04-18 11:52:09,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:09,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069174800] [2020-04-18 11:52:09,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:09,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:09,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:09,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:09,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-04-18 11:52:09,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:09,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:52:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:09,791 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 11:52:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:09,800 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2020-04-18 11:52:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 114 transitions. [2020-04-18 11:52:09,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:09,801 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [101557839] [2020-04-18 11:52:09,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:09,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:52:09,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [101557839] [2020-04-18 11:52:09,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:52:09,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:09,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:09,803 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-04-18 11:52:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:09,823 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-04-18 11:52:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:52:09,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-18 11:52:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:09,826 INFO L225 Difference]: With dead ends: 304 [2020-04-18 11:52:09,826 INFO L226 Difference]: Without dead ends: 304 [2020-04-18 11:52:09,826 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-18 11:52:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-04-18 11:52:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-18 11:52:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-04-18 11:52:09,864 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-04-18 11:52:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:09,865 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-04-18 11:52:09,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:52:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-04-18 11:52:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:52:09,866 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:09,866 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:09,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 1 times [2020-04-18 11:52:09,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:09,867 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [245146097] [2020-04-18 11:52:09,868 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:09,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 129 transitions. [2020-04-18 11:52:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:52:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:52:09,870 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 2 times [2020-04-18 11:52:09,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:09,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867990760] [2020-04-18 11:52:09,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:09,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867990760] [2020-04-18 11:52:09,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:09,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:09,914 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:09,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:09,920 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 35 transitions. [2020-04-18 11:52:09,920 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:09,924 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:09,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:09,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:09,925 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 11:52:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:09,939 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2020-04-18 11:52:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2020-04-18 11:52:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:52:09,940 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1526843371, now seen corresponding path program 3 times [2020-04-18 11:52:09,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312527052] [2020-04-18 11:52:09,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:10,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312527052] [2020-04-18 11:52:10,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:10,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:52:10,003 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:10,007 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:10,013 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 31 transitions. [2020-04-18 11:52:10,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:10,019 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:52:10,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:52:10,020 INFO L87 Difference]: Start difference. First operand 80 states and 136 transitions. Second operand 3 states. [2020-04-18 11:52:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:10,029 INFO L93 Difference]: Finished difference Result 84 states and 140 transitions. [2020-04-18 11:52:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 140 transitions. [2020-04-18 11:52:10,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:10,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [245146097] [2020-04-18 11:52:10,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:10,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:52:10,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [245146097] [2020-04-18 11:52:10,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:52:10,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:10,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:52:10,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:52:10,032 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 4 states. [2020-04-18 11:52:10,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:10,084 INFO L93 Difference]: Finished difference Result 418 states and 903 transitions. [2020-04-18 11:52:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:52:10,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 11:52:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:10,088 INFO L225 Difference]: With dead ends: 418 [2020-04-18 11:52:10,088 INFO L226 Difference]: Without dead ends: 418 [2020-04-18 11:52:10,089 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:52:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-18 11:52:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 295. [2020-04-18 11:52:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-04-18 11:52:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-04-18 11:52:10,100 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-04-18 11:52:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:10,101 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-04-18 11:52:10,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:52:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-04-18 11:52:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:52:10,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:10,102 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-18 11:52:10,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 3 times [2020-04-18 11:52:10,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:10,104 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [550146721] [2020-04-18 11:52:10,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:10,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 11:52:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-04-18 11:52:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:52:10,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 4 times [2020-04-18 11:52:10,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:10,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149016191] [2020-04-18 11:52:10,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:10,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149016191] [2020-04-18 11:52:10,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203102751] [2020-04-18 11:52:10,251 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:10,333 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:52:10,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:10,335 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:52:10,338 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:10,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:52:10,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-04-18 11:52:10,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:10,360 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:10,363 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 11:52:10,363 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:10,412 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:52:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:52:10,413 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 10 states. [2020-04-18 11:52:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:10,498 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-04-18 11:52:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-04-18 11:52:10,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:10,499 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [550146721] [2020-04-18 11:52:10,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:10,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:52:10,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [550146721] [2020-04-18 11:52:10,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:52:10,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:52:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:52:10,500 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 10 states. [2020-04-18 11:52:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:10,614 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-04-18 11:52:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:52:10,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-04-18 11:52:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:10,619 INFO L225 Difference]: With dead ends: 542 [2020-04-18 11:52:10,619 INFO L226 Difference]: Without dead ends: 542 [2020-04-18 11:52:10,620 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:52:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-04-18 11:52:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-04-18 11:52:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-04-18 11:52:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-04-18 11:52:10,634 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-04-18 11:52:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:10,634 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-04-18 11:52:10,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:52:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-04-18 11:52:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:52:10,636 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:10,636 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:10,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:10,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 1 times [2020-04-18 11:52:10,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:10,850 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1437143204] [2020-04-18 11:52:10,851 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:10,853 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 197 transitions. [2020-04-18 11:52:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-04-18 11:52:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:52:10,855 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 2 times [2020-04-18 11:52:10,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:10,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879465537] [2020-04-18 11:52:10,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:11,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879465537] [2020-04-18 11:52:11,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:11,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 11:52:11,290 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:11,293 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:11,327 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 39 transitions. [2020-04-18 11:52:11,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:11,537 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:52:11,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:52:11,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:52:11,538 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 12 states. [2020-04-18 11:52:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:12,332 INFO L93 Difference]: Finished difference Result 110 states and 197 transitions. [2020-04-18 11:52:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 197 transitions. [2020-04-18 11:52:12,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:12,333 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1437143204] [2020-04-18 11:52:12,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:12,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 11:52:12,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1437143204] [2020-04-18 11:52:12,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 11:52:12,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:12,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:52:12,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=293, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:52:12,335 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 12 states. [2020-04-18 11:52:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:12,961 INFO L93 Difference]: Finished difference Result 876 states and 1893 transitions. [2020-04-18 11:52:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:52:12,966 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-04-18 11:52:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:12,970 INFO L225 Difference]: With dead ends: 876 [2020-04-18 11:52:12,971 INFO L226 Difference]: Without dead ends: 753 [2020-04-18 11:52:12,971 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:52:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-04-18 11:52:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 420. [2020-04-18 11:52:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-18 11:52:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 926 transitions. [2020-04-18 11:52:12,987 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 926 transitions. Word has length 21 [2020-04-18 11:52:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:12,987 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 926 transitions. [2020-04-18 11:52:12,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 11:52:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 926 transitions. [2020-04-18 11:52:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 11:52:12,989 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:12,990 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:12,990 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 1 times [2020-04-18 11:52:12,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:12,991 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [591710292] [2020-04-18 11:52:12,991 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:12,993 INFO L259 McrAutomatonBuilder]: Finished intersection with 146 states and 266 transitions. [2020-04-18 11:52:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-04-18 11:52:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 11:52:12,997 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash 101782855, now seen corresponding path program 2 times [2020-04-18 11:52:12,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:12,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531129009] [2020-04-18 11:52:12,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:13,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531129009] [2020-04-18 11:52:13,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590738278] [2020-04-18 11:52:13,053 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:13,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-18 11:52:13,130 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:13,131 INFO L264 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-04-18 11:52:13,133 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:13,227 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-04-18 11:52:13,228 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:13,231 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:52:13,232 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:52:13,232 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-04-18 11:52:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:52:13,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:13,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-04-18 11:52:13,244 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:13,247 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:13,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 84 transitions. [2020-04-18 11:52:13,257 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:13,365 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:52:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:52:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:52:13,366 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 12 states. [2020-04-18 11:52:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:13,544 INFO L93 Difference]: Finished difference Result 157 states and 283 transitions. [2020-04-18 11:52:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 283 transitions. [2020-04-18 11:52:13,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 11:52:13,545 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:13,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 3 times [2020-04-18 11:52:13,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:13,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872660019] [2020-04-18 11:52:13,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:13,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872660019] [2020-04-18 11:52:13,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330419930] [2020-04-18 11:52:13,609 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:13,691 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:52:13,691 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:13,692 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:52:13,694 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:52:13,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:13,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-04-18 11:52:13,721 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:13,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:13,730 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 42 transitions. [2020-04-18 11:52:13,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:13,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:13,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:52:13,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:52:13,772 INFO L87 Difference]: Start difference. First operand 157 states and 283 transitions. Second operand 8 states. [2020-04-18 11:52:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:13,831 INFO L93 Difference]: Finished difference Result 178 states and 322 transitions. [2020-04-18 11:52:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 322 transitions. [2020-04-18 11:52:13,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:13,832 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [591710292] [2020-04-18 11:52:13,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:13,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:52:13,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [591710292] [2020-04-18 11:52:13,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:52:13,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:52:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:52:13,834 INFO L87 Difference]: Start difference. First operand 420 states and 926 transitions. Second operand 15 states. [2020-04-18 11:52:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,015 INFO L93 Difference]: Finished difference Result 795 states and 1681 transitions. [2020-04-18 11:52:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 11:52:15,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-04-18 11:52:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:15,021 INFO L225 Difference]: With dead ends: 795 [2020-04-18 11:52:15,021 INFO L226 Difference]: Without dead ends: 785 [2020-04-18 11:52:15,022 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=456, Invalid=1350, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:52:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-04-18 11:52:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 488. [2020-04-18 11:52:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-04-18 11:52:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1060 transitions. [2020-04-18 11:52:15,037 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1060 transitions. Word has length 24 [2020-04-18 11:52:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:15,037 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 1060 transitions. [2020-04-18 11:52:15,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:52:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1060 transitions. [2020-04-18 11:52:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:52:15,039 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:15,039 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-04-18 11:52:15,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:15,443 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 5 times [2020-04-18 11:52:15,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:15,444 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2111529880] [2020-04-18 11:52:15,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 11:52:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:52:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:52:15,446 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 6 times [2020-04-18 11:52:15,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:15,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377851533] [2020-04-18 11:52:15,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377851533] [2020-04-18 11:52:15,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710031762] [2020-04-18 11:52:15,556 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:15,669 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:52:15,669 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:15,671 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:52:15,673 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:52:15,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-04-18 11:52:15,704 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:15,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,714 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 11:52:15,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:15,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:15,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:52:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:52:15,787 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 13 states. [2020-04-18 11:52:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,943 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-04-18 11:52:15,943 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-04-18 11:52:15,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:15,944 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2111529880] [2020-04-18 11:52:15,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:15,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-04-18 11:52:15,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2111529880] [2020-04-18 11:52:15,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:52:15,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:15,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:52:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:52:15,945 INFO L87 Difference]: Start difference. First operand 488 states and 1060 transitions. Second operand 13 states. [2020-04-18 11:52:16,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:16,114 INFO L93 Difference]: Finished difference Result 898 states and 1911 transitions. [2020-04-18 11:52:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:52:16,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-04-18 11:52:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:16,119 INFO L225 Difference]: With dead ends: 898 [2020-04-18 11:52:16,119 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 11:52:16,119 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:52:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 11:52:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 581. [2020-04-18 11:52:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-04-18 11:52:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1275 transitions. [2020-04-18 11:52:16,138 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1275 transitions. Word has length 27 [2020-04-18 11:52:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:16,138 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 1275 transitions. [2020-04-18 11:52:16,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:52:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1275 transitions. [2020-04-18 11:52:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 11:52:16,140 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:16,140 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:52:16,353 INFO L427 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 3 times [2020-04-18 11:52:16,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:16,353 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [881764087] [2020-04-18 11:52:16,354 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:16,355 INFO L259 McrAutomatonBuilder]: Finished intersection with 194 states and 358 transitions. [2020-04-18 11:52:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-04-18 11:52:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 11:52:16,357 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:16,358 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 4 times [2020-04-18 11:52:16,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:16,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731119374] [2020-04-18 11:52:16,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:52:16,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731119374] [2020-04-18 11:52:16,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461070468] [2020-04-18 11:52:16,818 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 [2020-04-18 11:52:16,924 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:52:16,924 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:52:16,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 48 conjunts are in the unsatisfiable core [2020-04-18 11:52:16,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:52:16,957 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:52:16,957 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 485 treesize of output 481 [2020-04-18 11:52:16,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:16,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:16,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:16,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:16,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:16,979 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,179 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 24 [2020-04-18 11:52:17,180 INFO L619 ElimStorePlain]: treesize reduction 2396, result has 1.2 percent of original size [2020-04-18 11:52:17,181 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,181 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:4 [2020-04-18 11:52:17,348 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-18 11:52:17,348 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,355 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:52:17,356 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:52:17,357 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-18 11:52:17,539 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2020-04-18 11:52:17,539 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,549 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:52:17,550 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-18 11:52:17,551 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-18 11:52:17,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:52:17,953 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2020-04-18 11:52:17,954 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,958 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2020-04-18 11:52:17,959 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:52:17,981 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-18 11:52:17,982 INFO L539 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:52:17,982 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-18 11:52:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:52:18,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:18,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 27 [2020-04-18 11:52:18,070 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:18,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:18,082 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 46 transitions. [2020-04-18 11:52:18,082 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:19,475 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:52:19,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-18 11:52:19,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:52:19,477 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 35 states. [2020-04-18 11:52:21,880 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-04-18 11:52:22,603 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-18 11:52:23,200 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-18 11:52:23,951 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-04-18 11:52:24,260 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-04-18 11:52:25,061 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-04-18 11:52:25,397 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-04-18 11:52:26,548 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-04-18 11:52:26,939 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-04-18 11:52:28,157 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-04-18 11:52:28,490 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-04-18 11:52:28,791 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-04-18 11:52:30,578 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2020-04-18 11:52:31,006 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-04-18 11:52:32,036 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-04-18 11:52:32,431 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-04-18 11:52:35,572 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-04-18 11:52:36,840 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-18 11:52:38,393 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-04-18 11:52:39,561 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-04-18 11:52:40,313 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-04-18 11:52:40,563 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-04-18 11:52:43,235 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-04-18 11:52:43,821 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-04-18 11:52:45,557 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-04-18 11:52:45,761 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-04-18 11:52:48,515 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-04-18 11:52:49,514 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-04-18 11:52:51,597 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-04-18 11:52:54,181 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-04-18 11:52:55,393 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-04-18 11:52:56,173 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-04-18 11:52:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:57,251 INFO L93 Difference]: Finished difference Result 494 states and 900 transitions. [2020-04-18 11:52:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 900 transitions. [2020-04-18 11:52:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 11:52:57,253 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash 128587677, now seen corresponding path program 5 times [2020-04-18 11:52:57,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:57,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072424206] [2020-04-18 11:52:57,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:52:57,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072424206] [2020-04-18 11:52:57,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:57,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:57,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:57,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:57,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 11:52:57,312 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:57,447 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:52:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:57,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3313, Invalid=21809, Unknown=0, NotChecked=0, Total=25122 [2020-04-18 11:52:57,453 INFO L87 Difference]: Start difference. First operand 494 states and 900 transitions. Second operand 3 states. [2020-04-18 11:52:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:57,462 INFO L93 Difference]: Finished difference Result 510 states and 922 transitions. [2020-04-18 11:52:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 922 transitions. [2020-04-18 11:52:57,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:57,464 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [881764087] [2020-04-18 11:52:57,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:57,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:52:57,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [881764087] [2020-04-18 11:52:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-18 11:52:57,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:57,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 11:52:57,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3313, Invalid=21809, Unknown=0, NotChecked=0, Total=25122 [2020-04-18 11:52:57,472 INFO L87 Difference]: Start difference. First operand 581 states and 1275 transitions. Second operand 36 states. [2020-04-18 11:52:59,584 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-04-18 11:53:01,030 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-04-18 11:53:01,252 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-04-18 11:53:03,421 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-04-18 11:53:04,326 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-04-18 11:53:05,455 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-04-18 11:53:05,954 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-04-18 11:53:06,390 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-04-18 11:53:07,013 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-04-18 11:53:07,857 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-04-18 11:53:08,458 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-04-18 11:53:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:08,462 INFO L93 Difference]: Finished difference Result 1479 states and 3111 transitions. [2020-04-18 11:53:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-04-18 11:53:08,462 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 28 [2020-04-18 11:53:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:53:08,469 INFO L225 Difference]: With dead ends: 1479 [2020-04-18 11:53:08,469 INFO L226 Difference]: Without dead ends: 1399 [2020-04-18 11:53:08,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15461 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=4790, Invalid=38682, Unknown=0, NotChecked=0, Total=43472 [2020-04-18 11:53:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-04-18 11:53:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 563. [2020-04-18 11:53:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-04-18 11:53:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1228 transitions. [2020-04-18 11:53:08,493 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1228 transitions. Word has length 28 [2020-04-18 11:53:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:53:08,493 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 1228 transitions. [2020-04-18 11:53:08,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-18 11:53:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1228 transitions. [2020-04-18 11:53:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 11:53:08,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:53:08,495 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:53:08,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:08,701 INFO L427 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:53:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 4 times [2020-04-18 11:53:08,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:53:08,702 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [54230998] [2020-04-18 11:53:08,703 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:08,706 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 427 transitions. [2020-04-18 11:53:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-04-18 11:53:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 11:53:08,709 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:53:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -911784353, now seen corresponding path program 5 times [2020-04-18 11:53:08,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:53:08,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972511713] [2020-04-18 11:53:08,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:53:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:53:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-04-18 11:53:08,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972511713] [2020-04-18 11:53:08,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:53:08,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:53:08,762 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:53:08,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:08,785 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 91 transitions. [2020-04-18 11:53:08,785 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:53:08,800 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:53:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:53:08,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:53:08,801 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 5 states. [2020-04-18 11:53:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:08,850 INFO L93 Difference]: Finished difference Result 261 states and 471 transitions. [2020-04-18 11:53:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 471 transitions. [2020-04-18 11:53:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 11:53:08,851 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:53:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 6 times [2020-04-18 11:53:08,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:53:08,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804060050] [2020-04-18 11:53:08,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:53:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:53:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:53:08,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804060050] [2020-04-18 11:53:08,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819653579] [2020-04-18 11:53:08,984 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:09,082 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:53:09,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:53:09,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:53:09,086 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:53:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:53:09,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:53:09,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-04-18 11:53:09,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:53:09,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:09,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 49 transitions. [2020-04-18 11:53:09,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:53:09,243 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:53:09,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:53:09,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:53:09,245 INFO L87 Difference]: Start difference. First operand 261 states and 471 transitions. Second operand 11 states. [2020-04-18 11:53:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:09,528 INFO L93 Difference]: Finished difference Result 362 states and 647 transitions. [2020-04-18 11:53:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 647 transitions. [2020-04-18 11:53:09,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:53:09,530 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [54230998] [2020-04-18 11:53:09,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:53:09,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 11:53:09,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [54230998] [2020-04-18 11:53:09,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:53:09,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:53:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:53:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:53:09,531 INFO L87 Difference]: Start difference. First operand 563 states and 1228 transitions. Second operand 14 states. [2020-04-18 11:53:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:09,914 INFO L93 Difference]: Finished difference Result 892 states and 1894 transitions. [2020-04-18 11:53:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:53:09,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-04-18 11:53:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:53:09,919 INFO L225 Difference]: With dead ends: 892 [2020-04-18 11:53:09,919 INFO L226 Difference]: Without dead ends: 892 [2020-04-18 11:53:09,920 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 11:53:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-04-18 11:53:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 607. [2020-04-18 11:53:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-04-18 11:53:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1352 transitions. [2020-04-18 11:53:09,935 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1352 transitions. Word has length 31 [2020-04-18 11:53:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:53:09,936 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 1352 transitions. [2020-04-18 11:53:09,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:53:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1352 transitions. [2020-04-18 11:53:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 11:53:09,937 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:53:09,937 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-04-18 11:53:10,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:10,149 INFO L427 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:53:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:10,149 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 7 times [2020-04-18 11:53:10,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:53:10,150 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [850590188] [2020-04-18 11:53:10,150 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:10,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 11:53:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 11:53:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 11:53:10,152 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:53:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 8 times [2020-04-18 11:53:10,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:53:10,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002730867] [2020-04-18 11:53:10,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:53:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:53:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:53:10,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002730867] [2020-04-18 11:53:10,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298374792] [2020-04-18 11:53:10,272 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:10,374 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:53:10,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:53:10,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 11:53:10,382 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:53:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:53:10,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:53:10,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2020-04-18 11:53:10,409 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:53:10,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:10,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 11:53:10,427 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:53:10,503 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:53:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:53:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:53:10,504 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 16 states. [2020-04-18 11:53:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:10,745 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 11:53:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 11:53:10,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:53:10,746 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [850590188] [2020-04-18 11:53:10,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:53:10,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-04-18 11:53:10,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [850590188] [2020-04-18 11:53:10,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 11:53:10,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:53:10,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:53:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:53:10,748 INFO L87 Difference]: Start difference. First operand 607 states and 1352 transitions. Second operand 16 states. [2020-04-18 11:53:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:10,931 INFO L93 Difference]: Finished difference Result 1032 states and 2220 transitions. [2020-04-18 11:53:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:53:10,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-04-18 11:53:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:53:10,936 INFO L225 Difference]: With dead ends: 1032 [2020-04-18 11:53:10,936 INFO L226 Difference]: Without dead ends: 1032 [2020-04-18 11:53:10,936 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:53:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-04-18 11:53:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 684. [2020-04-18 11:53:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-04-18 11:53:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1521 transitions. [2020-04-18 11:53:10,951 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1521 transitions. Word has length 34 [2020-04-18 11:53:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:53:10,951 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 1521 transitions. [2020-04-18 11:53:10,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 11:53:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1521 transitions. [2020-04-18 11:53:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 11:53:10,953 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:53:10,953 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:53:11,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:11,156 INFO L427 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:53:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:11,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 1 times [2020-04-18 11:53:11,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:53:11,156 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1271208837] [2020-04-18 11:53:11,158 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:11,161 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 606 transitions. [2020-04-18 11:53:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-04-18 11:53:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 11:53:11,163 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:53:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 2 times [2020-04-18 11:53:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:53:11,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934818887] [2020-04-18 11:53:11,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:53:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:53:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:53:12,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934818887] [2020-04-18 11:53:12,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004843803] [2020-04-18 11:53:12,163 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:53:12,250 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:53:12,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:53:12,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 73 conjunts are in the unsatisfiable core [2020-04-18 11:53:12,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:53:12,263 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 587 treesize of output 555 [2020-04-18 11:53:12,264 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 11:53:12,397 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-04-18 11:53:12,398 INFO L619 ElimStorePlain]: treesize reduction 487, result has 4.7 percent of original size [2020-04-18 11:53:12,399 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:53:12,399 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:27, output treesize:8 [2020-04-18 11:53:12,578 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-18 11:53:12,579 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:53:12,588 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:53:12,589 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:53:12,589 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-18 11:53:12,843 INFO L343 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-04-18 11:53:12,843 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2020-04-18 11:53:12,844 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:53:12,855 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:53:12,856 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:53:12,857 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:27 [2020-04-18 11:53:17,082 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2020-04-18 11:53:17,083 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:53:17,101 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:53:17,103 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-04-18 11:53:17,103 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:39 [2020-04-18 11:53:17,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:53:17,744 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:53:17,747 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:53:17,749 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2020-04-18 11:53:17,750 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:53:17,780 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:53:17,780 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 39 [2020-04-18 11:53:17,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:53:17,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:53:17,783 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:53:17,831 INFO L619 ElimStorePlain]: treesize reduction 61, result has 31.5 percent of original size [2020-04-18 11:53:17,832 INFO L539 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:53:17,833 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:144, output treesize:11 [2020-04-18 11:53:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:53:17,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:53:17,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 44 [2020-04-18 11:53:17,970 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:53:17,976 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:17,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 54 transitions. [2020-04-18 11:53:17,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:53:24,147 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:53:24,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-04-18 11:53:24,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2343, Unknown=2, NotChecked=0, Total=2550 [2020-04-18 11:53:24,148 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 51 states. [2020-04-18 11:53:26,127 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-04-18 11:53:30,617 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 54 [2020-04-18 11:53:32,850 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2020-04-18 11:53:33,221 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-18 11:53:33,608 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-04-18 11:53:34,189 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 57 [2020-04-18 11:53:34,585 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-04-18 11:53:34,841 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2020-04-18 11:53:35,564 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-04-18 11:53:36,307 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2020-04-18 11:53:36,591 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 51 [2020-04-18 11:53:36,969 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-04-18 11:53:37,743 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2020-04-18 11:53:38,741 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-04-18 11:53:39,117 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-04-18 11:53:39,708 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-04-18 11:53:40,028 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-04-18 11:53:40,341 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-04-18 11:53:40,577 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-04-18 11:53:41,340 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-04-18 11:53:41,568 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2020-04-18 11:53:42,024 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-04-18 11:53:43,046 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2020-04-18 11:53:44,966 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-04-18 11:53:45,365 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-04-18 11:53:46,746 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2020-04-18 11:53:47,796 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-04-18 11:53:49,111 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-04-18 11:53:50,576 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2020-04-18 11:53:51,109 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-18 11:53:55,316 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2020-04-18 11:53:55,688 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2020-04-18 11:53:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:57,530 INFO L93 Difference]: Finished difference Result 588 states and 1064 transitions. [2020-04-18 11:53:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1064 transitions. [2020-04-18 11:53:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 11:53:57,533 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:53:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:53:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1726533202, now seen corresponding path program 3 times [2020-04-18 11:53:57,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:53:57,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688522213] [2020-04-18 11:53:57,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:53:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:53:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:53:57,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688522213] [2020-04-18 11:53:57,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:53:57,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:53:57,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:53:57,592 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:53:57,606 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 56 transitions. [2020-04-18 11:53:57,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:53:57,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:53:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:53:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2731, Invalid=16173, Unknown=2, NotChecked=0, Total=18906 [2020-04-18 11:53:57,763 INFO L87 Difference]: Start difference. First operand 588 states and 1064 transitions. Second operand 3 states. [2020-04-18 11:53:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:53:57,776 INFO L93 Difference]: Finished difference Result 657 states and 1168 transitions. [2020-04-18 11:53:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1168 transitions. [2020-04-18 11:53:57,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:53:57,778 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1271208837] [2020-04-18 11:53:57,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:53:57,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:53:57,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1271208837] [2020-04-18 11:53:57,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-04-18 11:53:57,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:53:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-04-18 11:53:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2731, Invalid=16173, Unknown=2, NotChecked=0, Total=18906 [2020-04-18 11:53:57,781 INFO L87 Difference]: Start difference. First operand 684 states and 1521 transitions. Second operand 52 states. [2020-04-18 11:53:59,355 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-18 11:54:02,658 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-04-18 11:54:03,520 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2020-04-18 11:54:04,471 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-04-18 11:54:05,049 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2020-04-18 11:54:09,714 WARN L192 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 101 DAG size of output: 76 [2020-04-18 11:54:10,300 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2020-04-18 11:54:10,954 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-04-18 11:54:11,471 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-18 11:54:11,752 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-04-18 11:54:12,800 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-04-18 11:54:13,285 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-04-18 11:54:15,772 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-04-18 11:54:16,043 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-04-18 11:54:24,369 WARN L192 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-04-18 11:54:41,867 WARN L192 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-04-18 11:55:09,804 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-04-18 11:55:18,860 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2020-04-18 11:55:26,277 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2020-04-18 11:55:26,725 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 57 [2020-04-18 11:55:27,082 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2020-04-18 11:55:27,358 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2020-04-18 11:55:32,210 WARN L192 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-04-18 11:55:32,472 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2020-04-18 11:55:32,714 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-04-18 11:55:41,286 WARN L192 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2020-04-18 11:55:41,868 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-04-18 11:55:42,382 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2020-04-18 11:55:48,274 WARN L192 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-04-18 11:55:48,711 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2020-04-18 11:55:49,269 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2020-04-18 11:55:53,966 WARN L192 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-04-18 11:56:05,120 WARN L192 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2020-04-18 11:56:05,413 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-18 11:56:06,921 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2020-04-18 11:56:07,320 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2020-04-18 11:56:11,941 WARN L192 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2020-04-18 11:56:13,108 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2020-04-18 11:56:13,662 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-04-18 11:56:13,956 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-04-18 11:56:14,214 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-04-18 11:56:16,238 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-04-18 11:56:17,542 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-04-18 11:56:19,634 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2020-04-18 11:56:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:19,780 INFO L93 Difference]: Finished difference Result 3065 states and 6391 transitions. [2020-04-18 11:56:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2020-04-18 11:56:19,780 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 36 [2020-04-18 11:56:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:56:19,795 INFO L225 Difference]: With dead ends: 3065 [2020-04-18 11:56:19,795 INFO L226 Difference]: Without dead ends: 2831 [2020-04-18 11:56:19,799 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29724 ImplicationChecksByTransitivity, 100.2s TimeCoverageRelationStatistics Valid=9020, Invalid=68536, Unknown=6, NotChecked=0, Total=77562 [2020-04-18 11:56:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-04-18 11:56:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 960. [2020-04-18 11:56:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-04-18 11:56:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2134 transitions. [2020-04-18 11:56:19,830 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 2134 transitions. Word has length 36 [2020-04-18 11:56:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:56:19,830 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 2134 transitions. [2020-04-18 11:56:19,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-04-18 11:56:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 2134 transitions. [2020-04-18 11:56:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 11:56:19,832 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:56:19,832 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:56:20,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:20,037 INFO L427 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:56:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:20,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1085658049, now seen corresponding path program 7 times [2020-04-18 11:56:20,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:56:20,038 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1526246440] [2020-04-18 11:56:20,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:20,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 314 states and 588 transitions. [2020-04-18 11:56:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-04-18 11:56:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 11:56:20,043 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:56:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1152212805, now seen corresponding path program 8 times [2020-04-18 11:56:20,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:56:20,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825894057] [2020-04-18 11:56:20,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:56:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:56:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-04-18 11:56:20,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825894057] [2020-04-18 11:56:20,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:56:20,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:56:20,080 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:56:20,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:20,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 98 transitions. [2020-04-18 11:56:20,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:56:20,174 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:56:20,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:56:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:56:20,175 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 5 states. [2020-04-18 11:56:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:20,229 INFO L93 Difference]: Finished difference Result 359 states and 653 transitions. [2020-04-18 11:56:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 653 transitions. [2020-04-18 11:56:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 11:56:20,231 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:56:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1085658049, now seen corresponding path program 9 times [2020-04-18 11:56:20,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:56:20,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079026290] [2020-04-18 11:56:20,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:56:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:56:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:56:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079026290] [2020-04-18 11:56:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290600398] [2020-04-18 11:56:20,358 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:20,450 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:56:20,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:56:20,452 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 11:56:20,461 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:56:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-04-18 11:56:20,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:56:20,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-04-18 11:56:20,524 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:56:20,531 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:20,550 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 56 transitions. [2020-04-18 11:56:20,550 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:56:20,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:56:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:56:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:56:20,697 INFO L87 Difference]: Start difference. First operand 359 states and 653 transitions. Second operand 16 states. [2020-04-18 11:56:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:21,419 INFO L93 Difference]: Finished difference Result 587 states and 1038 transitions. [2020-04-18 11:56:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1038 transitions. [2020-04-18 11:56:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 11:56:21,421 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:56:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1050523969, now seen corresponding path program 10 times [2020-04-18 11:56:21,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:56:21,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531374236] [2020-04-18 11:56:21,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:56:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:56:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:56:21,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531374236] [2020-04-18 11:56:21,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693476275] [2020-04-18 11:56:21,571 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:21,693 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:56:21,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:56:21,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 11:56:21,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:56:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 11:56:21,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:56:21,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 11 [2020-04-18 11:56:21,712 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:56:21,721 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:21,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 56 transitions. [2020-04-18 11:56:21,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:56:21,827 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:56:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:56:21,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 11:56:21,828 INFO L87 Difference]: Start difference. First operand 587 states and 1038 transitions. Second operand 12 states. [2020-04-18 11:56:22,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:22,503 INFO L93 Difference]: Finished difference Result 715 states and 1252 transitions. [2020-04-18 11:56:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1252 transitions. [2020-04-18 11:56:22,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:56:22,505 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1526246440] [2020-04-18 11:56:22,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:56:22,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-04-18 11:56:22,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1526246440] [2020-04-18 11:56:22,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 11:56:22,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:56:22,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 11:56:22,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1747, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:56:22,507 INFO L87 Difference]: Start difference. First operand 960 states and 2134 transitions. Second operand 22 states. [2020-04-18 11:56:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:23,192 INFO L93 Difference]: Finished difference Result 1807 states and 3858 transitions. [2020-04-18 11:56:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-04-18 11:56:23,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 38 [2020-04-18 11:56:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:56:23,203 INFO L225 Difference]: With dead ends: 1807 [2020-04-18 11:56:23,204 INFO L226 Difference]: Without dead ends: 1807 [2020-04-18 11:56:23,205 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=843, Invalid=4559, Unknown=0, NotChecked=0, Total=5402 [2020-04-18 11:56:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2020-04-18 11:56:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1036. [2020-04-18 11:56:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-04-18 11:56:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2332 transitions. [2020-04-18 11:56:23,236 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2332 transitions. Word has length 38 [2020-04-18 11:56:23,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:56:23,236 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 2332 transitions. [2020-04-18 11:56:23,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 11:56:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2332 transitions. [2020-04-18 11:56:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 11:56:23,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:56:23,239 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-04-18 11:56:23,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:23,645 INFO L427 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:56:23,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:23,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1774953421, now seen corresponding path program 9 times [2020-04-18 11:56:23,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:56:23,646 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [840460652] [2020-04-18 11:56:23,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:23,647 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 11:56:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 11:56:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 11:56:23,648 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:56:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:23,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1774953421, now seen corresponding path program 10 times [2020-04-18 11:56:23,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:56:23,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485465496] [2020-04-18 11:56:23,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:56:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:56:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:56:23,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485465496] [2020-04-18 11:56:23,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209048317] [2020-04-18 11:56:23,815 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 [2020-04-18 11:56:23,918 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:56:23,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:56:23,921 INFO L264 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 11:56:23,922 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:56:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:56:23,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:56:23,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2020-04-18 11:56:23,956 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:56:23,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:23,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 11:56:23,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:56:24,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:56:24,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:56:24,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:56:24,129 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 19 states. [2020-04-18 11:56:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:24,524 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2020-04-18 11:56:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2020-04-18 11:56:24,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:56:24,525 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [840460652] [2020-04-18 11:56:24,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:56:24,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-04-18 11:56:24,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [840460652] [2020-04-18 11:56:24,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 11:56:24,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:56:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:56:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:56:24,526 INFO L87 Difference]: Start difference. First operand 1036 states and 2332 transitions. Second operand 19 states. [2020-04-18 11:56:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:56:24,755 INFO L93 Difference]: Finished difference Result 1557 states and 3376 transitions. [2020-04-18 11:56:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 11:56:24,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-04-18 11:56:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:56:24,765 INFO L225 Difference]: With dead ends: 1557 [2020-04-18 11:56:24,765 INFO L226 Difference]: Without dead ends: 1557 [2020-04-18 11:56:24,766 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:56:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-04-18 11:56:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1113. [2020-04-18 11:56:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-04-18 11:56:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2501 transitions. [2020-04-18 11:56:24,790 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2501 transitions. Word has length 41 [2020-04-18 11:56:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:56:24,790 INFO L479 AbstractCegarLoop]: Abstraction has 1113 states and 2501 transitions. [2020-04-18 11:56:24,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 11:56:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2501 transitions. [2020-04-18 11:56:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 11:56:24,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:56:24,793 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:56:24,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:24,997 INFO L427 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:56:24,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:24,997 INFO L82 PathProgramCache]: Analyzing trace with hash 223818986, now seen corresponding path program 4 times [2020-04-18 11:56:24,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:56:24,998 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [220084451] [2020-04-18 11:56:25,000 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:25,007 INFO L259 McrAutomatonBuilder]: Finished intersection with 462 states and 879 transitions. [2020-04-18 11:56:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-04-18 11:56:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 11:56:25,011 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:56:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:56:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash 223818986, now seen corresponding path program 5 times [2020-04-18 11:56:25,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:56:25,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967739786] [2020-04-18 11:56:25,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:56:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:56:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:56:25,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967739786] [2020-04-18 11:56:25,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878747864] [2020-04-18 11:56:25,806 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 [2020-04-18 11:56:25,905 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:56:25,906 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:56:25,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 71 conjunts are in the unsatisfiable core [2020-04-18 11:56:25,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:56:25,921 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:56:25,921 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 104 [2020-04-18 11:56:25,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:56:25,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:56:25,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:56:25,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:56:25,924 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:26,022 INFO L619 ElimStorePlain]: treesize reduction 136, result has 17.6 percent of original size [2020-04-18 11:56:26,023 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:56:26,023 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:4 [2020-04-18 11:56:26,195 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-18 11:56:26,195 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:26,203 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:56:26,204 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:56:26,204 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-18 11:56:26,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:56:26,515 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-04-18 11:56:26,516 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:26,530 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:56:26,530 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:56:26,531 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:24 [2020-04-18 11:56:26,685 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2020-04-18 11:56:26,685 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:26,694 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:56:26,695 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-18 11:56:26,695 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-18 11:56:27,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:56:27,449 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2020-04-18 11:56:27,450 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:27,461 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2020-04-18 11:56:27,462 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:56:27,481 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-18 11:56:27,482 INFO L539 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 11:56:27,482 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-18 11:56:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:56:27,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:56:27,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 42 [2020-04-18 11:56:27,572 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:56:27,579 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:56:27,596 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 61 transitions. [2020-04-18 11:56:27,596 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. Received shutdown request... [2020-04-18 11:56:29,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:56:29,520 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 11:56:29,525 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 11:56:29,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:56:29 BasicIcfg [2020-04-18 11:56:29,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:56:29,527 INFO L168 Benchmark]: Toolchain (without parser) took 266997.99 ms. Allocated memory was 143.7 MB in the beginning and 550.5 MB in the end (delta: 406.8 MB). Free memory was 98.6 MB in the beginning and 317.9 MB in the end (delta: -219.3 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,527 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.12 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 96.7 MB in the beginning and 131.5 MB in the end (delta: -34.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.12 ms. Allocated memory is still 201.3 MB. Free memory was 131.5 MB in the beginning and 128.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,528 INFO L168 Benchmark]: Boogie Preprocessor took 53.84 ms. Allocated memory is still 201.3 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,529 INFO L168 Benchmark]: RCFGBuilder took 632.78 ms. Allocated memory is still 201.3 MB. Free memory was 127.4 MB in the beginning and 95.0 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,529 INFO L168 Benchmark]: TraceAbstraction took 265276.55 ms. Allocated memory was 201.3 MB in the beginning and 550.5 MB in the end (delta: 349.2 MB). Free memory was 94.3 MB in the beginning and 317.9 MB in the end (delta: -223.6 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:56:29,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.12 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 96.7 MB in the beginning and 131.5 MB in the end (delta: -34.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 114.12 ms. Allocated memory is still 201.3 MB. Free memory was 131.5 MB in the beginning and 128.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.84 ms. Allocated memory is still 201.3 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 632.78 ms. Allocated memory is still 201.3 MB. Free memory was 127.4 MB in the beginning and 95.0 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265276.55 ms. Allocated memory was 201.3 MB in the beginning and 550.5 MB in the end (delta: 349.2 MB). Free memory was 94.3 MB in the beginning and 317.9 MB in the end (delta: -223.6 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.7s, 133 ProgramPointsBefore, 40 ProgramPointsAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 3038 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7699 CheckedPairsTotal, 118 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was analyzing trace of length 44 with TraceHistMax 3,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 44 known predicates. - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was analyzing trace of length 44 with TraceHistMax 3,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 44 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 127 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 265.1s, OverallIterations: 16, TraceHistogramMax: 6, AutomataDifference: 157.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 840 SDtfs, 5229 SDslu, 8992 SDs, 0 SdLazy, 8805 SolverSat, 994 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 64.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 742 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48237 ImplicationChecksByTransitivity, 128.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1113occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 6121 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown