/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:30:12,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:12,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:12,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:12,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:12,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:12,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:12,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:12,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:12,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:12,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:12,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:12,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:12,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:12,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:12,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:12,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:12,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:12,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:12,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:12,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:12,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:12,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:12,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:12,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:30:12,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:12,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:12,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:12,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:12,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:12,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:12,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:12,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:12,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:12,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:12,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:12,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:13,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:13,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:13,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:13,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:13,022 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:13,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:13,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:13,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:13,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:13,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:13,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:13,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:13,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:13,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:13,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:13,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:13,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:13,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:13,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:13,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:13,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:13,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:13,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:13,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:13,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:13,027 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:13,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:13,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:13,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:13,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:13,324 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:13,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 12:30:13,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64f54078e/48c80b3ee6cf4038a1b87eb5298dc2f4/FLAG2c80056b5 [2020-10-16 12:30:13,956 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:13,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 12:30:13,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64f54078e/48c80b3ee6cf4038a1b87eb5298dc2f4/FLAG2c80056b5 [2020-10-16 12:30:14,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64f54078e/48c80b3ee6cf4038a1b87eb5298dc2f4 [2020-10-16 12:30:14,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:14,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:14,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:14,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:14,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:14,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:14" (1/1) ... [2020-10-16 12:30:14,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e244c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:14, skipping insertion in model container [2020-10-16 12:30:14,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:14" (1/1) ... [2020-10-16 12:30:14,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:14,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:14,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:14,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:15,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:15,157 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:30:15,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15 WrapperNode [2020-10-16 12:30:15,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:15,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:15,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:30:15,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:30:15,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:30:15,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:30:15,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:30:15,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:30:15,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... [2020-10-16 12:30:15,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:30:15,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:30:15,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:30:15,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:30:15,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 12:30:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 12:30:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 12:30:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 12:30:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:30:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:30:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:30:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 12:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:30:15,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:30:15,354 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:30:15,936 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:30:15,936 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-16 12:30:15,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:15 BoogieIcfgContainer [2020-10-16 12:30:15,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:30:15,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:30:15,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:30:15,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:30:15,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:14" (1/3) ... [2020-10-16 12:30:15,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:15, skipping insertion in model container [2020-10-16 12:30:15,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:15" (2/3) ... [2020-10-16 12:30:15,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:15, skipping insertion in model container [2020-10-16 12:30:15,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:15" (3/3) ... [2020-10-16 12:30:15,949 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-16 12:30:15,962 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:30:15,962 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:30:15,971 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:30:15,973 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:30:16,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,052 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,053 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,053 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,054 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,054 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,055 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,055 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,057 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,057 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,057 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,057 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,058 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,065 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,066 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,066 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,066 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,066 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,067 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,067 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,069 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,069 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,069 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,069 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,073 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,074 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,074 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,080 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,080 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,085 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,086 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,086 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,086 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,086 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,087 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,087 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,087 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,087 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,087 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,088 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,088 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,088 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,088 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,089 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,090 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,090 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,090 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,090 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,091 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,091 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,097 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,097 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,098 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,098 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,098 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,098 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,098 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,099 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,099 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,099 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,100 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,100 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,100 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,100 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,101 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,101 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,101 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,101 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:30:16,108 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:30:16,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:30:16,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:30:16,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:30:16,182 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:30:16,182 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:30:16,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:30:16,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:30:16,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:30:16,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:30:16,206 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:30:16,207 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-16 12:30:16,209 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-16 12:30:16,212 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-16 12:30:16,281 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-16 12:30:16,281 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 12:30:16,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 12:30:16,301 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-16 12:30:18,808 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-16 12:30:18,920 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-16 12:30:19,527 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-16 12:30:19,760 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-16 12:30:19,786 INFO L132 LiptonReduction]: Checked pairs total: 10135 [2020-10-16 12:30:19,786 INFO L134 LiptonReduction]: Total number of compositions: 129 [2020-10-16 12:30:19,793 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-10-16 12:30:19,819 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-10-16 12:30:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-16 12:30:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:30:19,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:19,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:30:19,830 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:19,837 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-10-16 12:30:19,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:19,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405648185] [2020-10-16 12:30:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405648185] [2020-10-16 12:30:20,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:20,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:20,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [955273213] [2020-10-16 12:30:20,087 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:20,090 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:20,103 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:30:20,103 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:20,107 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:20,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:20,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:20,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:20,123 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-10-16 12:30:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:20,187 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-10-16 12:30:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:20,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 12:30:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:20,211 INFO L225 Difference]: With dead ends: 504 [2020-10-16 12:30:20,211 INFO L226 Difference]: Without dead ends: 460 [2020-10-16 12:30:20,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-16 12:30:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-10-16 12:30:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-16 12:30:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-10-16 12:30:20,299 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-10-16 12:30:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:20,299 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-10-16 12:30:20,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-10-16 12:30:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:30:20,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:20,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:20,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:30:20,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-10-16 12:30:20,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:20,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103600500] [2020-10-16 12:30:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103600500] [2020-10-16 12:30:20,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:20,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:30:20,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1809564323] [2020-10-16 12:30:20,434 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:20,435 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:20,437 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 12:30:20,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:20,437 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:20,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:20,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:20,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:20,440 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-10-16 12:30:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:20,458 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-10-16 12:30:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:20,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:30:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:20,463 INFO L225 Difference]: With dead ends: 464 [2020-10-16 12:30:20,464 INFO L226 Difference]: Without dead ends: 464 [2020-10-16 12:30:20,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-16 12:30:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-16 12:30:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-16 12:30:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-10-16 12:30:20,496 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-10-16 12:30:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:20,497 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-10-16 12:30:20,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-10-16 12:30:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:30:20,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:20,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:20,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:30:20,500 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-10-16 12:30:20,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:20,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3372953] [2020-10-16 12:30:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3372953] [2020-10-16 12:30:20,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738475860] [2020-10-16 12:30:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:20,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:30:20,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:20,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 12:30:20,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1442744492] [2020-10-16 12:30:20,740 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:20,743 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:20,745 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 12:30:20,745 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:20,746 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:20,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:30:20,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:30:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:30:20,747 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 5 states. [2020-10-16 12:30:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:20,829 INFO L93 Difference]: Finished difference Result 775 states and 1949 transitions. [2020-10-16 12:30:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:30:20,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:30:20,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:20,836 INFO L225 Difference]: With dead ends: 775 [2020-10-16 12:30:20,836 INFO L226 Difference]: Without dead ends: 775 [2020-10-16 12:30:20,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:30:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-16 12:30:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 592. [2020-10-16 12:30:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-16 12:30:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1551 transitions. [2020-10-16 12:30:20,867 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1551 transitions. Word has length 13 [2020-10-16 12:30:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:20,867 INFO L481 AbstractCegarLoop]: Abstraction has 592 states and 1551 transitions. [2020-10-16 12:30:20,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:30:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1551 transitions. [2020-10-16 12:30:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:30:20,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:20,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 12:30:21,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-10-16 12:30:21,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618985799] [2020-10-16 12:30:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618985799] [2020-10-16 12:30:21,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:21,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:21,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [795985125] [2020-10-16 12:30:21,149 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:21,151 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:21,156 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-10-16 12:30:21,156 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:21,165 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:21,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:21,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:21,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:21,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:21,167 INFO L87 Difference]: Start difference. First operand 592 states and 1551 transitions. Second operand 3 states. [2020-10-16 12:30:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:21,188 INFO L93 Difference]: Finished difference Result 311 states and 689 transitions. [2020-10-16 12:30:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:21,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-16 12:30:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:21,192 INFO L225 Difference]: With dead ends: 311 [2020-10-16 12:30:21,192 INFO L226 Difference]: Without dead ends: 311 [2020-10-16 12:30:21,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-16 12:30:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2020-10-16 12:30:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-16 12:30:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 662 transitions. [2020-10-16 12:30:21,204 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 662 transitions. Word has length 16 [2020-10-16 12:30:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:21,205 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 662 transitions. [2020-10-16 12:30:21,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 662 transitions. [2020-10-16 12:30:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:30:21,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:21,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:30:21,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-10-16 12:30:21,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691620476] [2020-10-16 12:30:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691620476] [2020-10-16 12:30:21,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:21,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:30:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [604719442] [2020-10-16 12:30:21,261 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:21,265 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:21,273 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-10-16 12:30:21,274 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:21,276 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:21,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:30:21,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:30:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:21,302 INFO L87 Difference]: Start difference. First operand 301 states and 662 transitions. Second operand 3 states. [2020-10-16 12:30:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:21,332 INFO L93 Difference]: Finished difference Result 379 states and 830 transitions. [2020-10-16 12:30:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:30:21,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:30:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:21,336 INFO L225 Difference]: With dead ends: 379 [2020-10-16 12:30:21,336 INFO L226 Difference]: Without dead ends: 379 [2020-10-16 12:30:21,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:30:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-16 12:30:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 319. [2020-10-16 12:30:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-16 12:30:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 695 transitions. [2020-10-16 12:30:21,347 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 695 transitions. Word has length 17 [2020-10-16 12:30:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:21,347 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 695 transitions. [2020-10-16 12:30:21,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:30:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 695 transitions. [2020-10-16 12:30:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:30:21,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:21,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:30:21,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 2 times [2020-10-16 12:30:21,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852798870] [2020-10-16 12:30:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852798870] [2020-10-16 12:30:21,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210822764] [2020-10-16 12:30:21,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:21,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:21,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:21,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 12:30:21,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:21,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-16 12:30:21,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [132674994] [2020-10-16 12:30:21,547 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:21,551 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:21,556 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-16 12:30:21,556 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:21,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:21,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:30:21,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:30:21,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:30:21,558 INFO L87 Difference]: Start difference. First operand 319 states and 695 transitions. Second operand 7 states. [2020-10-16 12:30:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:21,632 INFO L93 Difference]: Finished difference Result 520 states and 1122 transitions. [2020-10-16 12:30:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:30:21,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-16 12:30:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:21,636 INFO L225 Difference]: With dead ends: 520 [2020-10-16 12:30:21,637 INFO L226 Difference]: Without dead ends: 520 [2020-10-16 12:30:21,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:30:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-16 12:30:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 396. [2020-10-16 12:30:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-16 12:30:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 864 transitions. [2020-10-16 12:30:21,652 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 864 transitions. Word has length 20 [2020-10-16 12:30:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:21,652 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 864 transitions. [2020-10-16 12:30:21,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:30:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 864 transitions. [2020-10-16 12:30:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:30:21,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:21,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:21,868 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-10-16 12:30:21,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713223764] [2020-10-16 12:30:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:22,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713223764] [2020-10-16 12:30:22,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:30:22,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:30:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1779303836] [2020-10-16 12:30:22,295 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:22,298 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:22,305 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-10-16 12:30:22,307 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:22,421 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:30:22,437 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:30:22,452 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:30:22,456 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:22,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:30:22,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:22,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:30:22,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:30:22,458 INFO L87 Difference]: Start difference. First operand 396 states and 864 transitions. Second operand 14 states. [2020-10-16 12:30:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:23,665 INFO L93 Difference]: Finished difference Result 663 states and 1412 transitions. [2020-10-16 12:30:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:30:23,666 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-10-16 12:30:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:23,669 INFO L225 Difference]: With dead ends: 663 [2020-10-16 12:30:23,669 INFO L226 Difference]: Without dead ends: 586 [2020-10-16 12:30:23,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-16 12:30:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 432. [2020-10-16 12:30:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-16 12:30:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 938 transitions. [2020-10-16 12:30:23,683 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 938 transitions. Word has length 21 [2020-10-16 12:30:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:23,683 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 938 transitions. [2020-10-16 12:30:23,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:30:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 938 transitions. [2020-10-16 12:30:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:30:23,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:23,685 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-16 12:30:23,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:30:23,686 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 3 times [2020-10-16 12:30:23,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:23,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27676044] [2020-10-16 12:30:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:23,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27676044] [2020-10-16 12:30:23,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520315885] [2020-10-16 12:30:23,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:23,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:30:23,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:23,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:30:23,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:23,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:23,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-16 12:30:23,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1540006503] [2020-10-16 12:30:23,932 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:23,941 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:23,979 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-10-16 12:30:23,980 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:23,980 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:23,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:30:23,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:30:23,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:30:23,981 INFO L87 Difference]: Start difference. First operand 432 states and 938 transitions. Second operand 9 states. [2020-10-16 12:30:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:24,077 INFO L93 Difference]: Finished difference Result 747 states and 1594 transitions. [2020-10-16 12:30:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:30:24,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-16 12:30:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:24,082 INFO L225 Difference]: With dead ends: 747 [2020-10-16 12:30:24,083 INFO L226 Difference]: Without dead ends: 747 [2020-10-16 12:30:24,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:30:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-16 12:30:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 525. [2020-10-16 12:30:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-16 12:30:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1151 transitions. [2020-10-16 12:30:24,099 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1151 transitions. Word has length 27 [2020-10-16 12:30:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:24,099 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 1151 transitions. [2020-10-16 12:30:24,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:30:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1151 transitions. [2020-10-16 12:30:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:30:24,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:24,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:24,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:24,314 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 2 times [2020-10-16 12:30:24,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:24,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923332015] [2020-10-16 12:30:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:24,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923332015] [2020-10-16 12:30:24,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987469555] [2020-10-16 12:30:24,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:24,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-16 12:30:24,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:24,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-16 12:30:24,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:24,976 INFO L384 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 19 treesize of output 15 [2020-10-16 12:30:24,977 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:30:24,999 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 12:30:25,005 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:30:25,005 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 12:30:25,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:30:25,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 12:30:25,435 INFO L545 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-16 12:30:25,442 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 12:30:25,677 INFO L545 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-16 12:30:25,888 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2020-10-16 12:30:25,890 INFO L625 ElimStorePlain]: treesize reduction 138, result has 51.9 percent of original size [2020-10-16 12:30:25,946 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-16 12:30:25,947 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:149 [2020-10-16 12:30:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:30:26,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:30:26,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-16 12:30:26,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1685248496] [2020-10-16 12:30:26,246 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:26,251 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:26,264 INFO L258 McrAutomatonBuilder]: Finished intersection with 63 states and 96 transitions. [2020-10-16 12:30:26,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:26,441 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:26,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:30:26,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:30:26,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:26,442 INFO L87 Difference]: Start difference. First operand 525 states and 1151 transitions. Second operand 13 states. [2020-10-16 12:30:28,176 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-16 12:30:29,204 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-16 12:30:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:30,303 INFO L93 Difference]: Finished difference Result 866 states and 1877 transitions. [2020-10-16 12:30:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:30:30,303 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-16 12:30:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:30,308 INFO L225 Difference]: With dead ends: 866 [2020-10-16 12:30:30,309 INFO L226 Difference]: Without dead ends: 866 [2020-10-16 12:30:30,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 12:30:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-16 12:30:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 608. [2020-10-16 12:30:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-16 12:30:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1343 transitions. [2020-10-16 12:30:30,327 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1343 transitions. Word has length 28 [2020-10-16 12:30:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:30,328 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 1343 transitions. [2020-10-16 12:30:30,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:30:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1343 transitions. [2020-10-16 12:30:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:30:30,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:30,329 INFO L422 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] [2020-10-16 12:30:30,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:30,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 1 times [2020-10-16 12:30:30,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:30,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119465378] [2020-10-16 12:30:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:30:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119465378] [2020-10-16 12:30:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19897272] [2020-10-16 12:30:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:30,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:30:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:30:30,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:30,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 12:30:30,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [497292970] [2020-10-16 12:30:30,735 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:30,742 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:30,763 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 99 transitions. [2020-10-16 12:30:30,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:30,952 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:30,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:30:30,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:30:30,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:30:30,954 INFO L87 Difference]: Start difference. First operand 608 states and 1343 transitions. Second operand 8 states. [2020-10-16 12:30:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:31,062 INFO L93 Difference]: Finished difference Result 909 states and 1956 transitions. [2020-10-16 12:30:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:30:31,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-16 12:30:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:31,068 INFO L225 Difference]: With dead ends: 909 [2020-10-16 12:30:31,068 INFO L226 Difference]: Without dead ends: 909 [2020-10-16 12:30:31,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:30:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-10-16 12:30:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 652. [2020-10-16 12:30:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-16 12:30:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1467 transitions. [2020-10-16 12:30:31,087 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1467 transitions. Word has length 31 [2020-10-16 12:30:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:31,087 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 1467 transitions. [2020-10-16 12:30:31,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:30:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1467 transitions. [2020-10-16 12:30:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-16 12:30:31,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:31,090 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-16 12:30:31,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:30:31,304 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 4 times [2020-10-16 12:30:31,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:31,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399976789] [2020-10-16 12:30:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:31,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399976789] [2020-10-16 12:30:31,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077569044] [2020-10-16 12:30:31,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:31,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:31,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:31,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:30:31,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:31,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:31,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-16 12:30:31,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [809554841] [2020-10-16 12:30:31,540 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:31,548 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:31,559 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-10-16 12:30:31,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:31,560 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:30:31,561 INFO L87 Difference]: Start difference. First operand 652 states and 1467 transitions. Second operand 11 states. [2020-10-16 12:30:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:31,699 INFO L93 Difference]: Finished difference Result 1024 states and 2234 transitions. [2020-10-16 12:30:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:31,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-16 12:30:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:31,705 INFO L225 Difference]: With dead ends: 1024 [2020-10-16 12:30:31,705 INFO L226 Difference]: Without dead ends: 1024 [2020-10-16 12:30:31,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:30:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-16 12:30:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 729. [2020-10-16 12:30:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-16 12:30:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1636 transitions. [2020-10-16 12:30:31,725 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1636 transitions. Word has length 34 [2020-10-16 12:30:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:31,725 INFO L481 AbstractCegarLoop]: Abstraction has 729 states and 1636 transitions. [2020-10-16 12:30:31,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1636 transitions. [2020-10-16 12:30:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-16 12:30:31,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:31,727 INFO L422 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] [2020-10-16 12:30:31,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:31,943 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:31,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1848776679, now seen corresponding path program 1 times [2020-10-16 12:30:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:31,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716941744] [2020-10-16 12:30:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716941744] [2020-10-16 12:30:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156262429] [2020-10-16 12:30:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:30:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:32,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-16 12:30:32,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:32,887 INFO L384 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 19 treesize of output 15 [2020-10-16 12:30:32,888 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:30:32,910 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 12:30:32,912 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:30:32,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 12:30:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 12:30:33,266 INFO L384 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 69 treesize of output 41 [2020-10-16 12:30:33,266 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:30:33,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:30:33,288 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:30:33,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 12:30:33,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:30:33,737 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 12:30:33,750 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 12:30:33,754 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 12:30:33,803 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:30:34,044 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:30:34,584 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:30:35,216 INFO L721 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:30:36,105 INFO L721 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:30:37,145 INFO L721 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:33:26,945 INFO L545 ElimStorePlain]: Start of recursive call 3: 40 dim-0 vars, End of recursive call: 40 dim-0 vars, and 1 xjuncts. [2020-10-16 12:33:39,771 WARN L193 SmtUtils]: Spent 12.83 s on a formula simplification. DAG size of input: 294 DAG size of output: 235 [2020-10-16 12:33:39,773 INFO L625 ElimStorePlain]: treesize reduction 276, result has 75.9 percent of original size [2020-10-16 12:33:42,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 35 dim-0 vars, and 1 xjuncts. [2020-10-16 12:33:42,743 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:759 [2020-10-16 12:33:46,343 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-16 12:33:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:46,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:46,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2020-10-16 12:33:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094217221] [2020-10-16 12:33:46,358 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:46,364 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:46,379 INFO L258 McrAutomatonBuilder]: Finished intersection with 71 states and 104 transitions. [2020-10-16 12:33:46,380 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:46,500 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:33:46,630 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:33:46,637 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:33:46,639 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:33:46,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:33:46,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:33:46,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2020-10-16 12:33:46,640 INFO L87 Difference]: Start difference. First operand 729 states and 1636 transitions. Second operand 20 states. [2020-10-16 12:33:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:49,405 INFO L93 Difference]: Finished difference Result 1460 states and 3158 transitions. [2020-10-16 12:33:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 12:33:49,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2020-10-16 12:33:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:49,416 INFO L225 Difference]: With dead ends: 1460 [2020-10-16 12:33:49,416 INFO L226 Difference]: Without dead ends: 1318 [2020-10-16 12:33:49,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 39 SyntacticMatches, 15 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=357, Invalid=3065, Unknown=0, NotChecked=0, Total=3422 [2020-10-16 12:33:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-16 12:33:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 785. [2020-10-16 12:33:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-16 12:33:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1764 transitions. [2020-10-16 12:33:49,439 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1764 transitions. Word has length 36 [2020-10-16 12:33:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:49,439 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 1764 transitions. [2020-10-16 12:33:49,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:33:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1764 transitions. [2020-10-16 12:33:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-16 12:33:49,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:49,441 INFO L422 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] [2020-10-16 12:33:49,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:49,654 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133555, now seen corresponding path program 2 times [2020-10-16 12:33:49,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:49,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267199437] [2020-10-16 12:33:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:33:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267199437] [2020-10-16 12:33:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108238326] [2020-10-16 12:33:49,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:33:49,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:49,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:49,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:33:49,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:33:49,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:49,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 12:33:49,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1625358825] [2020-10-16 12:33:49,868 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:49,876 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:49,901 INFO L258 McrAutomatonBuilder]: Finished intersection with 87 states and 134 transitions. [2020-10-16 12:33:49,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:50,084 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:33:50,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:33:50,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:50,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:33:50,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:33:50,085 INFO L87 Difference]: Start difference. First operand 785 states and 1764 transitions. Second operand 10 states. [2020-10-16 12:33:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:50,247 INFO L93 Difference]: Finished difference Result 1307 states and 2823 transitions. [2020-10-16 12:33:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:33:50,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-16 12:33:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:50,253 INFO L225 Difference]: With dead ends: 1307 [2020-10-16 12:33:50,253 INFO L226 Difference]: Without dead ends: 1307 [2020-10-16 12:33:50,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:33:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2020-10-16 12:33:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 785. [2020-10-16 12:33:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-16 12:33:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1764 transitions. [2020-10-16 12:33:50,276 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1764 transitions. Word has length 38 [2020-10-16 12:33:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:50,277 INFO L481 AbstractCegarLoop]: Abstraction has 785 states and 1764 transitions. [2020-10-16 12:33:50,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:33:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1764 transitions. [2020-10-16 12:33:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-16 12:33:50,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:50,279 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-16 12:33:50,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 12:33:50,494 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1525277201, now seen corresponding path program 5 times [2020-10-16 12:33:50,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:50,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288051245] [2020-10-16 12:33:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:50,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288051245] [2020-10-16 12:33:50,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668598452] [2020-10-16 12:33:50,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:50,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-16 12:33:50,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:33:50,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:50,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:33:50,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-16 12:33:50,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [922404782] [2020-10-16 12:33:50,764 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:50,780 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:50,799 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-10-16 12:33:50,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:50,800 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:33:50,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:33:50,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:33:50,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:33:50,802 INFO L87 Difference]: Start difference. First operand 785 states and 1764 transitions. Second operand 8 states. [2020-10-16 12:33:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:50,845 INFO L93 Difference]: Finished difference Result 1552 states and 3367 transitions. [2020-10-16 12:33:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:33:50,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-16 12:33:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:50,850 INFO L225 Difference]: With dead ends: 1552 [2020-10-16 12:33:50,850 INFO L226 Difference]: Without dead ends: 959 [2020-10-16 12:33:50,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:33:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-16 12:33:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 815. [2020-10-16 12:33:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-16 12:33:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1698 transitions. [2020-10-16 12:33:50,869 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1698 transitions. Word has length 41 [2020-10-16 12:33:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:50,869 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 1698 transitions. [2020-10-16 12:33:50,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:33:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1698 transitions. [2020-10-16 12:33:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-16 12:33:50,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:50,871 INFO L422 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] [2020-10-16 12:33:51,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:51,085 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash 158907430, now seen corresponding path program 2 times [2020-10-16 12:33:51,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:51,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123445544] [2020-10-16 12:33:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:33:51,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123445544] [2020-10-16 12:33:51,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348928253] [2020-10-16 12:33:51,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:33:51,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:33:51,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:51,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-16 12:33:51,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:51,913 INFO L384 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 19 treesize of output 15 [2020-10-16 12:33:51,913 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:33:51,940 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 12:33:51,942 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:33:51,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 12:33:52,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 12:33:52,297 INFO L384 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 69 treesize of output 41 [2020-10-16 12:33:52,297 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:33:52,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:33:52,319 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:33:52,319 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 12:33:52,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:33:52,798 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 12:33:52,813 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 12:33:52,976 INFO L545 ElimStorePlain]: Start of recursive call 2: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-10-16 12:33:52,988 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 12:33:53,005 INFO L545 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-16 12:33:53,132 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-10-16 12:33:53,133 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.3 percent of original size [2020-10-16 12:33:53,176 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-16 12:33:53,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:85 [2020-10-16 12:33:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:33:53,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:53,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-10-16 12:33:53,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [342468858] [2020-10-16 12:33:53,316 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:53,326 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:53,364 INFO L258 McrAutomatonBuilder]: Finished intersection with 92 states and 139 transitions. [2020-10-16 12:33:53,364 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:53,502 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 12:33:53,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 12:33:53,701 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:33:53,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:33:53,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:53,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:33:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:33:53,703 INFO L87 Difference]: Start difference. First operand 815 states and 1698 transitions. Second operand 22 states. [2020-10-16 12:33:56,226 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-16 12:33:56,680 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 12:33:58,067 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 12:33:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:58,545 INFO L93 Difference]: Finished difference Result 1295 states and 2696 transitions. [2020-10-16 12:33:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 12:33:58,546 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2020-10-16 12:33:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:58,551 INFO L225 Difference]: With dead ends: 1295 [2020-10-16 12:33:58,551 INFO L226 Difference]: Without dead ends: 1295 [2020-10-16 12:33:58,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 60 SyntacticMatches, 15 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=795, Invalid=4905, Unknown=0, NotChecked=0, Total=5700 [2020-10-16 12:33:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-10-16 12:33:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 972. [2020-10-16 12:33:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-16 12:33:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2053 transitions. [2020-10-16 12:33:58,575 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2053 transitions. Word has length 43 [2020-10-16 12:33:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:58,575 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 2053 transitions. [2020-10-16 12:33:58,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:33:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2053 transitions. [2020-10-16 12:33:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 12:33:58,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:58,577 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:58,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:33:58,790 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:58,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1282653762, now seen corresponding path program 3 times [2020-10-16 12:33:58,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:58,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226743160] [2020-10-16 12:33:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:33:58,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226743160] [2020-10-16 12:33:58,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231932286] [2020-10-16 12:33:58,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:33:59,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-16 12:33:59,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:59,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:33:59,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:33:59,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:59,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-16 12:33:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1064014551] [2020-10-16 12:33:59,068 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:59,078 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:59,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 85 transitions. [2020-10-16 12:33:59,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:33:59,170 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:33:59,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:33:59,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:33:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:33:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:33:59,171 INFO L87 Difference]: Start difference. First operand 972 states and 2053 transitions. Second operand 12 states. [2020-10-16 12:33:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:33:59,333 INFO L93 Difference]: Finished difference Result 1527 states and 3173 transitions. [2020-10-16 12:33:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:33:59,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-16 12:33:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:33:59,338 INFO L225 Difference]: With dead ends: 1527 [2020-10-16 12:33:59,338 INFO L226 Difference]: Without dead ends: 1167 [2020-10-16 12:33:59,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:33:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-10-16 12:33:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 852. [2020-10-16 12:33:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-16 12:33:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1768 transitions. [2020-10-16 12:33:59,355 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1768 transitions. Word has length 45 [2020-10-16 12:33:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:33:59,355 INFO L481 AbstractCegarLoop]: Abstraction has 852 states and 1768 transitions. [2020-10-16 12:33:59,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:33:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1768 transitions. [2020-10-16 12:33:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 12:33:59,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:33:59,357 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:33:59,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:33:59,571 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:33:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:33:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2015805632, now seen corresponding path program 4 times [2020-10-16 12:33:59,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:33:59,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144440758] [2020-10-16 12:33:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:33:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:33:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:33:59,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144440758] [2020-10-16 12:33:59,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275867026] [2020-10-16 12:33:59,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:33:59,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:33:59,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:33:59,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:33:59,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:33:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:33:59,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:33:59,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 12:33:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [494348010] [2020-10-16 12:33:59,814 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:33:59,830 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:33:59,876 INFO L258 McrAutomatonBuilder]: Finished intersection with 80 states and 113 transitions. [2020-10-16 12:33:59,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:00,000 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:34:00,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:34:00,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:34:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:34:00,001 INFO L87 Difference]: Start difference. First operand 852 states and 1768 transitions. Second operand 10 states. [2020-10-16 12:34:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:00,153 INFO L93 Difference]: Finished difference Result 986 states and 1987 transitions. [2020-10-16 12:34:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:34:00,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-16 12:34:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:00,158 INFO L225 Difference]: With dead ends: 986 [2020-10-16 12:34:00,158 INFO L226 Difference]: Without dead ends: 906 [2020-10-16 12:34:00,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:34:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-16 12:34:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 748. [2020-10-16 12:34:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-16 12:34:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1545 transitions. [2020-10-16 12:34:00,174 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1545 transitions. Word has length 45 [2020-10-16 12:34:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:00,174 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 1545 transitions. [2020-10-16 12:34:00,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:34:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1545 transitions. [2020-10-16 12:34:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 12:34:00,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:00,176 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:00,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 12:34:00,389 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1958720896, now seen corresponding path program 5 times [2020-10-16 12:34:00,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:00,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461634858] [2020-10-16 12:34:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:34:00,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461634858] [2020-10-16 12:34:00,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139905958] [2020-10-16 12:34:00,500 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:34:00,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 12:34:00,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:34:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:34:00,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:00,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-16 12:34:00,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2078403711] [2020-10-16 12:34:00,631 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:00,661 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:00,704 INFO L258 McrAutomatonBuilder]: Finished intersection with 108 states and 169 transitions. [2020-10-16 12:34:00,705 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:00,924 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:34:00,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:34:00,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:34:00,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:34:00,925 INFO L87 Difference]: Start difference. First operand 748 states and 1545 transitions. Second operand 12 states. [2020-10-16 12:34:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:01,140 INFO L93 Difference]: Finished difference Result 1305 states and 2590 transitions. [2020-10-16 12:34:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:34:01,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-16 12:34:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:01,146 INFO L225 Difference]: With dead ends: 1305 [2020-10-16 12:34:01,146 INFO L226 Difference]: Without dead ends: 1295 [2020-10-16 12:34:01,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:34:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-10-16 12:34:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 778. [2020-10-16 12:34:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-16 12:34:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-16 12:34:01,162 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-16 12:34:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:01,162 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-16 12:34:01,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:34:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-16 12:34:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-16 12:34:01,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:01,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:01,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:34:01,379 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:01,379 INFO L82 PathProgramCache]: Analyzing trace with hash 579552405, now seen corresponding path program 3 times [2020-10-16 12:34:01,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:01,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510902164] [2020-10-16 12:34:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:02,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510902164] [2020-10-16 12:34:02,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222460365] [2020-10-16 12:34:02,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:02,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:34:02,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:02,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 89 conjunts are in the unsatisfiable core [2020-10-16 12:34:02,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:02,795 INFO L384 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 19 treesize of output 15 [2020-10-16 12:34:02,796 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:34:02,826 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.9 percent of original size [2020-10-16 12:34:02,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:34:02,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:53 [2020-10-16 12:34:03,294 INFO L350 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-10-16 12:34:03,295 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 12:34:03,295 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:34:03,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:34:03,315 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:34:03,315 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:72, output treesize:57 [2020-10-16 12:34:03,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 12:34:03,729 INFO L384 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 69 treesize of output 41 [2020-10-16 12:34:03,730 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:34:03,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:34:03,751 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:34:03,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:78, output treesize:57 [2020-10-16 12:34:29,251 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:34:29,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:34:29,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:34:29,263 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 12:34:29,264 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 12:34:29,265 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 31 [2020-10-16 12:34:29,278 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 12:34:29,289 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:34:29,289 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 45 [2020-10-16 12:34:29,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,321 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 12:34:29,323 INFO L545 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-10-16 12:34:29,433 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-16 12:34:29,434 INFO L625 ElimStorePlain]: treesize reduction 146, result has 36.0 percent of original size [2020-10-16 12:34:29,442 INFO L545 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. [2020-10-16 12:34:29,442 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:190, output treesize:70 [2020-10-16 12:34:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:34:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 51 [2020-10-16 12:34:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1242954307] [2020-10-16 12:34:29,570 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:34:29,580 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:34:29,618 INFO L258 McrAutomatonBuilder]: Finished intersection with 100 states and 147 transitions. [2020-10-16 12:34:29,619 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:34:30,333 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:34:30,350 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:34:30,361 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-10-16 12:34:30,365 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:34:30,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:34:30,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:34:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:34:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2532, Unknown=12, NotChecked=0, Total=2756 [2020-10-16 12:34:30,367 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 26 states. [2020-10-16 12:34:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:34:34,550 INFO L93 Difference]: Finished difference Result 1419 states and 2847 transitions. [2020-10-16 12:34:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:34:34,551 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 51 [2020-10-16 12:34:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:34:34,555 INFO L225 Difference]: With dead ends: 1419 [2020-10-16 12:34:34,555 INFO L226 Difference]: Without dead ends: 624 [2020-10-16 12:34:34,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 55 SyntacticMatches, 20 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=617, Invalid=5691, Unknown=12, NotChecked=0, Total=6320 [2020-10-16 12:34:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-16 12:34:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 560. [2020-10-16 12:34:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-16 12:34:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1114 transitions. [2020-10-16 12:34:34,567 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1114 transitions. Word has length 51 [2020-10-16 12:34:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:34:34,567 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1114 transitions. [2020-10-16 12:34:34,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:34:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1114 transitions. [2020-10-16 12:34:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-16 12:34:34,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:34:34,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:34:34,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:34,784 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:34:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:34:34,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1640379624, now seen corresponding path program 4 times [2020-10-16 12:34:34,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:34:34,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976368290] [2020-10-16 12:34:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:34:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:34:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:34:35,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976368290] [2020-10-16 12:34:35,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470658008] [2020-10-16 12:34:35,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:36,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:34:36,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:34:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-16 12:34:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:34:36,200 INFO L384 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 19 treesize of output 15 [2020-10-16 12:34:36,200 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:34:36,230 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 12:34:36,231 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:34:36,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 Received shutdown request... [2020-10-16 12:34:36,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:34:36,542 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:34:36,546 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:34:36,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:34:36 BasicIcfg [2020-10-16 12:34:36,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:34:36,548 INFO L168 Benchmark]: Toolchain (without parser) took 262320.60 ms. Allocated memory was 139.5 MB in the beginning and 499.6 MB in the end (delta: 360.2 MB). Free memory was 100.4 MB in the beginning and 237.0 MB in the end (delta: -136.6 MB). Peak memory consumption was 223.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,549 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:34:36,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 928.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 131.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.03 ms. Allocated memory is still 202.9 MB. Free memory was 131.6 MB in the beginning and 128.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,550 INFO L168 Benchmark]: Boogie Preprocessor took 37.42 ms. Allocated memory is still 202.9 MB. Free memory was 128.9 MB in the beginning and 126.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,550 INFO L168 Benchmark]: RCFGBuilder took 671.71 ms. Allocated memory is still 202.9 MB. Free memory was 126.8 MB in the beginning and 94.1 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,551 INFO L168 Benchmark]: TraceAbstraction took 260606.44 ms. Allocated memory was 202.9 MB in the beginning and 499.6 MB in the end (delta: 296.7 MB). Free memory was 93.4 MB in the beginning and 237.0 MB in the end (delta: -143.6 MB). Peak memory consumption was 153.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:34:36,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 928.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 131.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.03 ms. Allocated memory is still 202.9 MB. Free memory was 131.6 MB in the beginning and 128.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.42 ms. Allocated memory is still 202.9 MB. Free memory was 128.9 MB in the beginning and 126.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 671.71 ms. Allocated memory is still 202.9 MB. Free memory was 126.8 MB in the beginning and 94.1 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260606.44 ms. Allocated memory was 202.9 MB in the beginning and 499.6 MB in the end (delta: 296.7 MB). Free memory was 93.4 MB in the beginning and 237.0 MB in the end (delta: -143.6 MB). Peak memory consumption was 153.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3384 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 230 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 137 PlacesBefore, 40 PlacesAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 129 TotalNumberOfCompositions, 10135 MoverChecksTotal - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was analyzing trace of length 59 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 32 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 59 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 32 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 260.3s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 1108 SDtfs, 2382 SDslu, 6740 SDs, 0 SdLazy, 6587 SolverSat, 368 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1258 GetRequests, 748 SyntacticMatches, 100 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5453 ImplicationChecksByTransitivity, 44.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=972occurred 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: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 4179 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 227.7s InterpolantComputationTime, 1064 NumberOfCodeBlocks, 1057 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 1031 ConstructedInterpolants, 29 QuantifiedInterpolants, 497049 SizeOfPredicates, 168 NumberOfNonLiveVariables, 3789 ConjunctsInSsa, 341 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 270/972 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown