/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 22:57:29,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 22:57:29,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 22:57:30,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 22:57:30,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 22:57:30,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 22:57:30,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 22:57:30,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 22:57:30,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 22:57:30,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 22:57:30,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 22:57:30,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 22:57:30,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 22:57:30,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 22:57:30,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 22:57:30,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 22:57:30,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 22:57:30,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 22:57:30,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 22:57:30,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 22:57:30,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 22:57:30,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 22:57:30,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 22:57:30,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 22:57:30,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 22:57:30,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 22:57:30,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 22:57:30,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 22:57:30,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 22:57:30,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 22:57:30,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 22:57:30,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 22:57:30,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 22:57:30,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 22:57:30,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 22:57:30,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 22:57:30,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 22:57:30,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 22:57:30,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 22:57:30,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 22:57:30,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 22:57:30,125 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 22:57:30,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 22:57:30,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 22:57:30,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 22:57:30,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 22:57:30,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 22:57:30,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 22:57:30,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 22:57:30,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 22:57:30,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 22:57:30,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 22:57:30,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 22:57:30,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 22:57:30,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 22:57:30,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 22:57:30,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 22:57:30,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 22:57:30,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 22:57:30,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 22:57:30,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 22:57:30,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 22:57:30,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 22:57:30,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 22:57:30,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 22:57:30,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 22:57:30,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 22:57:30,526 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 22:57:30,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longest-2.i [2021-01-06 22:57:30,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fccd903c8/04061fd895db435683a5d2632300510b/FLAGbcefd043b [2021-01-06 22:57:31,350 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 22:57:31,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i [2021-01-06 22:57:31,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fccd903c8/04061fd895db435683a5d2632300510b/FLAGbcefd043b [2021-01-06 22:57:31,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fccd903c8/04061fd895db435683a5d2632300510b [2021-01-06 22:57:31,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 22:57:31,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 22:57:31,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 22:57:31,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 22:57:31,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 22:57:31,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:57:31" (1/1) ... [2021-01-06 22:57:31,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609756a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:31, skipping insertion in model container [2021-01-06 22:57:31,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:57:31" (1/1) ... [2021-01-06 22:57:31,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 22:57:31,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 22:57:32,114 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~stack,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~stack,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[#t~ret38,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2021-01-06 22:57:32,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 22:57:32,168 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 22:57:32,212 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~stack,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~stack,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[#t~ret38,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2021-01-06 22:57:32,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 22:57:32,517 INFO L208 MainTranslator]: Completed translation [2021-01-06 22:57:32,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32 WrapperNode [2021-01-06 22:57:32,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 22:57:32,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 22:57:32,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 22:57:32,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 22:57:32,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 22:57:32,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 22:57:32,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 22:57:32,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 22:57:32,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... [2021-01-06 22:57:32,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 22:57:32,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 22:57:32,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 22:57:32,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 22:57:32,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-01-06 22:57:32,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-01-06 22:57:32,730 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-01-06 22:57:32,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-01-06 22:57:32,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 22:57:32,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 22:57:32,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 22:57:32,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 22:57:32,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-06 22:57:32,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 22:57:32,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 22:57:32,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 22:57:32,733 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 22:57:33,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 22:57:33,484 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-01-06 22:57:33,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:57:33 BoogieIcfgContainer [2021-01-06 22:57:33,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 22:57:33,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 22:57:33,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 22:57:33,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 22:57:33,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:57:31" (1/3) ... [2021-01-06 22:57:33,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc42549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:57:33, skipping insertion in model container [2021-01-06 22:57:33,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:57:32" (2/3) ... [2021-01-06 22:57:33,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc42549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:57:33, skipping insertion in model container [2021-01-06 22:57:33,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:57:33" (3/3) ... [2021-01-06 22:57:33,504 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2021-01-06 22:57:33,511 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 22:57:33,512 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 22:57:33,517 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 22:57:33,518 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 22:57:33,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,595 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,595 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,596 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,596 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,596 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,596 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,596 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,597 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,597 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,597 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,597 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,600 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,600 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,600 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,600 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,601 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,601 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,602 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,602 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,602 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,602 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,602 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,603 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,603 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,603 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,603 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,603 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,604 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,605 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,605 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,605 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,605 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,606 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,606 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,606 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,606 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,606 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,607 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,608 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,608 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,608 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,608 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,608 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,609 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,609 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,609 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,609 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,610 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,610 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,610 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,610 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,610 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,611 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,611 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,611 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,611 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,612 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,613 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,613 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,613 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,613 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,614 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,615 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,615 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,615 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,615 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,616 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,617 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,617 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,617 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,617 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,617 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,618 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,618 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,618 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,618 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,619 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,620 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,620 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,620 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,621 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,621 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,621 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,621 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,621 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,622 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,622 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,622 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,622 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,623 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,623 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,623 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,623 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,624 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,624 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,624 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,624 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,624 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,625 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,626 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,626 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,626 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,626 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,627 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,627 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,627 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,627 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,627 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,628 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,628 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,628 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,629 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,629 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,629 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,629 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,630 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,631 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,632 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,633 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,633 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,634 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,634 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,635 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,635 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,636 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,636 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,636 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,637 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,637 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,637 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,637 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,637 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,638 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,638 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,638 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,638 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,638 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,639 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,639 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,639 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,639 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,645 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,646 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,646 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,646 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,647 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,700 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,701 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,701 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,701 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,701 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,702 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,702 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,702 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,702 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,703 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,703 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,705 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,705 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,706 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,706 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,706 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,706 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,706 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,707 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,720 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,720 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,721 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,723 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,723 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,723 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,724 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,735 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,739 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,739 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,739 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,739 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,739 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,740 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,740 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,743 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 22:57:33,761 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-01-06 22:57:33,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 22:57:33,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 22:57:33,803 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 22:57:33,803 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 22:57:33,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 22:57:33,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 22:57:33,803 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 22:57:33,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 22:57:33,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 22:57:33,820 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 22:57:33,822 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 144 transitions, 310 flow [2021-01-06 22:57:33,825 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 144 transitions, 310 flow [2021-01-06 22:57:33,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 144 transitions, 310 flow [2021-01-06 22:57:33,903 INFO L129 PetriNetUnfolder]: 11/144 cut-off events. [2021-01-06 22:57:33,903 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-01-06 22:57:33,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 144 events. 11/144 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 108. Up to 3 conditions per place. [2021-01-06 22:57:33,932 INFO L116 LiptonReduction]: Number of co-enabled transitions 5962 [2021-01-06 22:57:37,542 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-01-06 22:57:37,648 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 22:57:38,758 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-06 22:57:38,866 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-01-06 22:57:39,135 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-06 22:57:39,251 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-01-06 22:57:40,022 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2021-01-06 22:57:40,249 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 22:57:40,722 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2021-01-06 22:57:40,941 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 22:57:42,072 WARN L197 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 135 [2021-01-06 22:57:42,534 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 22:57:43,451 WARN L197 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 135 [2021-01-06 22:57:43,856 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 22:57:43,910 INFO L131 LiptonReduction]: Checked pairs total: 11460 [2021-01-06 22:57:43,910 INFO L133 LiptonReduction]: Total number of compositions: 129 [2021-01-06 22:57:43,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2021-01-06 22:57:43,944 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2021-01-06 22:57:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2021-01-06 22:57:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 22:57:43,952 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:43,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 22:57:43,953 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash 295998977, now seen corresponding path program 1 times [2021-01-06 22:57:43,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:43,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546013018] [2021-01-06 22:57:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:44,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546013018] [2021-01-06 22:57:44,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:44,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 22:57:44,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053796233] [2021-01-06 22:57:44,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 22:57:44,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:44,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 22:57:44,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:44,268 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2021-01-06 22:57:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:44,381 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2021-01-06 22:57:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 22:57:44,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-06 22:57:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:44,402 INFO L225 Difference]: With dead ends: 504 [2021-01-06 22:57:44,402 INFO L226 Difference]: Without dead ends: 460 [2021-01-06 22:57:44,404 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 [2021-01-06 22:57:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-01-06 22:57:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2021-01-06 22:57:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2021-01-06 22:57:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2021-01-06 22:57:44,496 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2021-01-06 22:57:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:44,496 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2021-01-06 22:57:44,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 22:57:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2021-01-06 22:57:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 22:57:44,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:44,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:57:44,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 22:57:44,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash -638453305, now seen corresponding path program 1 times [2021-01-06 22:57:44,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:44,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055111006] [2021-01-06 22:57:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:44,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055111006] [2021-01-06 22:57:44,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:44,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 22:57:44,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131951103] [2021-01-06 22:57:44,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 22:57:44,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 22:57:44,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:44,589 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2021-01-06 22:57:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:44,609 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2021-01-06 22:57:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 22:57:44,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 22:57:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:44,615 INFO L225 Difference]: With dead ends: 464 [2021-01-06 22:57:44,615 INFO L226 Difference]: Without dead ends: 464 [2021-01-06 22:57:44,616 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 [2021-01-06 22:57:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-01-06 22:57:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-01-06 22:57:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2021-01-06 22:57:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2021-01-06 22:57:44,676 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2021-01-06 22:57:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:44,676 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2021-01-06 22:57:44,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 22:57:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2021-01-06 22:57:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 22:57:44,678 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:44,678 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:57:44,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 22:57:44,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:44,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2046159186, now seen corresponding path program 1 times [2021-01-06 22:57:44,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:44,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184515188] [2021-01-06 22:57:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:44,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184515188] [2021-01-06 22:57:44,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437975637] [2021-01-06 22:57:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:44,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 22:57:44,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:45,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:45,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-01-06 22:57:45,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117424081] [2021-01-06 22:57:45,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 22:57:45,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 22:57:45,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 22:57:45,038 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2021-01-06 22:57:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:45,155 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2021-01-06 22:57:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 22:57:45,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-06 22:57:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:45,163 INFO L225 Difference]: With dead ends: 866 [2021-01-06 22:57:45,163 INFO L226 Difference]: Without dead ends: 851 [2021-01-06 22:57:45,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 22:57:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2021-01-06 22:57:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2021-01-06 22:57:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2021-01-06 22:57:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2021-01-06 22:57:45,200 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2021-01-06 22:57:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:45,200 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2021-01-06 22:57:45,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 22:57:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2021-01-06 22:57:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 22:57:45,211 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:45,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:57:45,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 22:57:45,426 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 980200272, now seen corresponding path program 1 times [2021-01-06 22:57:45,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:45,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337401674] [2021-01-06 22:57:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:45,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337401674] [2021-01-06 22:57:45,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:45,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 22:57:45,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324127419] [2021-01-06 22:57:45,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 22:57:45,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 22:57:45,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:45,488 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2021-01-06 22:57:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:45,512 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2021-01-06 22:57:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 22:57:45,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 22:57:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:45,515 INFO L225 Difference]: With dead ends: 304 [2021-01-06 22:57:45,515 INFO L226 Difference]: Without dead ends: 304 [2021-01-06 22:57:45,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-01-06 22:57:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2021-01-06 22:57:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2021-01-06 22:57:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2021-01-06 22:57:45,526 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2021-01-06 22:57:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:45,528 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2021-01-06 22:57:45,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 22:57:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2021-01-06 22:57:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 22:57:45,529 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:45,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:57:45,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 22:57:45,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash -977738613, now seen corresponding path program 1 times [2021-01-06 22:57:45,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:45,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381853917] [2021-01-06 22:57:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:45,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381853917] [2021-01-06 22:57:45,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:45,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 22:57:45,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544890724] [2021-01-06 22:57:45,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 22:57:45,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:45,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 22:57:45,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:45,595 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2021-01-06 22:57:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:45,644 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2021-01-06 22:57:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 22:57:45,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 22:57:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:45,648 INFO L225 Difference]: With dead ends: 372 [2021-01-06 22:57:45,648 INFO L226 Difference]: Without dead ends: 372 [2021-01-06 22:57:45,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 22:57:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-01-06 22:57:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2021-01-06 22:57:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-01-06 22:57:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2021-01-06 22:57:45,659 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2021-01-06 22:57:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:45,660 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2021-01-06 22:57:45,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 22:57:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2021-01-06 22:57:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 22:57:45,661 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:45,661 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-01-06 22:57:45,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 22:57:45,662 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 262138209, now seen corresponding path program 2 times [2021-01-06 22:57:45,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:45,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380564890] [2021-01-06 22:57:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:45,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380564890] [2021-01-06 22:57:45,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502088630] [2021-01-06 22:57:45,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:45,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:57:45,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:57:45,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 22:57:45,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:45,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:45,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-01-06 22:57:45,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629455504] [2021-01-06 22:57:45,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 22:57:45,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:45,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 22:57:45,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 22:57:45,994 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 9 states. [2021-01-06 22:57:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:46,161 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2021-01-06 22:57:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 22:57:46,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2021-01-06 22:57:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:46,169 INFO L225 Difference]: With dead ends: 542 [2021-01-06 22:57:46,169 INFO L226 Difference]: Without dead ends: 542 [2021-01-06 22:57:46,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:57:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-01-06 22:57:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2021-01-06 22:57:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2021-01-06 22:57:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2021-01-06 22:57:46,198 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2021-01-06 22:57:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:46,199 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2021-01-06 22:57:46,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 22:57:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2021-01-06 22:57:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 22:57:46,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:46,203 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] [2021-01-06 22:57:46,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:57:46,405 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1767294014, now seen corresponding path program 1 times [2021-01-06 22:57:46,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:46,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414734199] [2021-01-06 22:57:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:46,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414734199] [2021-01-06 22:57:46,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:46,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 22:57:46,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913019270] [2021-01-06 22:57:46,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 22:57:46,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:46,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 22:57:46,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:57:46,892 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 12 states. [2021-01-06 22:57:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:47,589 INFO L93 Difference]: Finished difference Result 664 states and 1430 transitions. [2021-01-06 22:57:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 22:57:47,590 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2021-01-06 22:57:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:47,595 INFO L225 Difference]: With dead ends: 664 [2021-01-06 22:57:47,595 INFO L226 Difference]: Without dead ends: 603 [2021-01-06 22:57:47,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-01-06 22:57:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-01-06 22:57:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 428. [2021-01-06 22:57:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2021-01-06 22:57:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 948 transitions. [2021-01-06 22:57:47,611 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 948 transitions. Word has length 21 [2021-01-06 22:57:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:47,612 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 948 transitions. [2021-01-06 22:57:47,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 22:57:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 948 transitions. [2021-01-06 22:57:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 22:57:47,613 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:47,613 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] [2021-01-06 22:57:47,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 22:57:47,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1143458416, now seen corresponding path program 2 times [2021-01-06 22:57:47,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:47,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095964109] [2021-01-06 22:57:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:48,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095964109] [2021-01-06 22:57:48,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:48,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 22:57:48,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038851847] [2021-01-06 22:57:48,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 22:57:48,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 22:57:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:57:48,190 INFO L87 Difference]: Start difference. First operand 428 states and 948 transitions. Second operand 12 states. [2021-01-06 22:57:48,767 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-01-06 22:57:48,958 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-06 22:57:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:49,166 INFO L93 Difference]: Finished difference Result 691 states and 1490 transitions. [2021-01-06 22:57:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 22:57:49,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2021-01-06 22:57:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:49,171 INFO L225 Difference]: With dead ends: 691 [2021-01-06 22:57:49,171 INFO L226 Difference]: Without dead ends: 629 [2021-01-06 22:57:49,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-06 22:57:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-01-06 22:57:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 416. [2021-01-06 22:57:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2021-01-06 22:57:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 916 transitions. [2021-01-06 22:57:49,186 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 916 transitions. Word has length 21 [2021-01-06 22:57:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:49,186 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 916 transitions. [2021-01-06 22:57:49,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 22:57:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 916 transitions. [2021-01-06 22:57:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 22:57:49,188 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:49,188 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:57:49,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 22:57:49,188 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1744571894, now seen corresponding path program 1 times [2021-01-06 22:57:49,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:49,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78089582] [2021-01-06 22:57:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:49,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78089582] [2021-01-06 22:57:49,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113829788] [2021-01-06 22:57:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:49,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 22:57:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 22:57:49,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:57:49,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-01-06 22:57:49,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379799940] [2021-01-06 22:57:49,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 22:57:49,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 22:57:49,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 22:57:49,402 INFO L87 Difference]: Start difference. First operand 416 states and 916 transitions. Second operand 6 states. [2021-01-06 22:57:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:49,509 INFO L93 Difference]: Finished difference Result 576 states and 1231 transitions. [2021-01-06 22:57:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 22:57:49,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-06 22:57:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:49,514 INFO L225 Difference]: With dead ends: 576 [2021-01-06 22:57:49,514 INFO L226 Difference]: Without dead ends: 566 [2021-01-06 22:57:49,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-06 22:57:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-01-06 22:57:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 476. [2021-01-06 22:57:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2021-01-06 22:57:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1042 transitions. [2021-01-06 22:57:49,531 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1042 transitions. Word has length 24 [2021-01-06 22:57:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:49,531 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 1042 transitions. [2021-01-06 22:57:49,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 22:57:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1042 transitions. [2021-01-06 22:57:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 22:57:49,533 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:49,533 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-01-06 22:57:49,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:57:49,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash -575916210, now seen corresponding path program 3 times [2021-01-06 22:57:49,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:49,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553958917] [2021-01-06 22:57:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:49,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553958917] [2021-01-06 22:57:49,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377215106] [2021-01-06 22:57:49,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:50,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 22:57:50,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:57:50,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 22:57:50,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:50,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:50,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-06 22:57:50,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903592850] [2021-01-06 22:57:50,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 22:57:50,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:50,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 22:57:50,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 22:57:50,085 INFO L87 Difference]: Start difference. First operand 476 states and 1042 transitions. Second operand 11 states. [2021-01-06 22:57:50,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:50,205 INFO L93 Difference]: Finished difference Result 789 states and 1669 transitions. [2021-01-06 22:57:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 22:57:50,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2021-01-06 22:57:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:50,210 INFO L225 Difference]: With dead ends: 789 [2021-01-06 22:57:50,211 INFO L226 Difference]: Without dead ends: 789 [2021-01-06 22:57:50,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:57:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-01-06 22:57:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 553. [2021-01-06 22:57:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2021-01-06 22:57:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1211 transitions. [2021-01-06 22:57:50,230 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1211 transitions. Word has length 27 [2021-01-06 22:57:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:50,230 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1211 transitions. [2021-01-06 22:57:50,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 22:57:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1211 transitions. [2021-01-06 22:57:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 22:57:50,232 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:50,232 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] [2021-01-06 22:57:50,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:57:50,446 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:50,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash 648857091, now seen corresponding path program 3 times [2021-01-06 22:57:50,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:50,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251714625] [2021-01-06 22:57:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:57:50,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251714625] [2021-01-06 22:57:50,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 22:57:50,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-06 22:57:50,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192486619] [2021-01-06 22:57:50,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:57:50,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:50,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:57:50,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:57:50,947 INFO L87 Difference]: Start difference. First operand 553 states and 1211 transitions. Second operand 15 states. [2021-01-06 22:57:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:53,636 INFO L93 Difference]: Finished difference Result 888 states and 1900 transitions. [2021-01-06 22:57:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 22:57:53,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2021-01-06 22:57:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:53,642 INFO L225 Difference]: With dead ends: 888 [2021-01-06 22:57:53,642 INFO L226 Difference]: Without dead ends: 848 [2021-01-06 22:57:53,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 22:57:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-01-06 22:57:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 543. [2021-01-06 22:57:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2021-01-06 22:57:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1192 transitions. [2021-01-06 22:57:53,661 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1192 transitions. Word has length 28 [2021-01-06 22:57:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:53,662 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 1192 transitions. [2021-01-06 22:57:53,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:57:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1192 transitions. [2021-01-06 22:57:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 22:57:53,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:53,664 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] [2021-01-06 22:57:53,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 22:57:53,664 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1543916503, now seen corresponding path program 2 times [2021-01-06 22:57:53,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:53,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103410525] [2021-01-06 22:57:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 22:57:53,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103410525] [2021-01-06 22:57:53,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707984499] [2021-01-06 22:57:53,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:53,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:57:53,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:57:53,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 22:57:53,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 22:57:53,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:53,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-06 22:57:53,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996302022] [2021-01-06 22:57:53,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 22:57:53,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 22:57:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 22:57:53,961 INFO L87 Difference]: Start difference. First operand 543 states and 1192 transitions. Second operand 10 states. [2021-01-06 22:57:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:54,141 INFO L93 Difference]: Finished difference Result 859 states and 1820 transitions. [2021-01-06 22:57:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 22:57:54,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 22:57:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:54,167 INFO L225 Difference]: With dead ends: 859 [2021-01-06 22:57:54,168 INFO L226 Difference]: Without dead ends: 859 [2021-01-06 22:57:54,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:57:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-01-06 22:57:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 587. [2021-01-06 22:57:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2021-01-06 22:57:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1316 transitions. [2021-01-06 22:57:54,190 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1316 transitions. Word has length 31 [2021-01-06 22:57:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:54,190 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 1316 transitions. [2021-01-06 22:57:54,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 22:57:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1316 transitions. [2021-01-06 22:57:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 22:57:54,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:54,193 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-01-06 22:57:54,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 22:57:54,407 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1343608001, now seen corresponding path program 4 times [2021-01-06 22:57:54,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:54,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560414808] [2021-01-06 22:57:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560414808] [2021-01-06 22:57:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078474964] [2021-01-06 22:57:54,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:54,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:57:54,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:57:54,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 22:57:54,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:54,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:54,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-06 22:57:54,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423179539] [2021-01-06 22:57:54,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 22:57:54,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 22:57:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-06 22:57:54,728 INFO L87 Difference]: Start difference. First operand 587 states and 1316 transitions. Second operand 13 states. [2021-01-06 22:57:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:57:54,906 INFO L93 Difference]: Finished difference Result 931 states and 2006 transitions. [2021-01-06 22:57:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 22:57:54,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2021-01-06 22:57:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:57:54,912 INFO L225 Difference]: With dead ends: 931 [2021-01-06 22:57:54,913 INFO L226 Difference]: Without dead ends: 931 [2021-01-06 22:57:54,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:57:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-01-06 22:57:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 664. [2021-01-06 22:57:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2021-01-06 22:57:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1485 transitions. [2021-01-06 22:57:54,933 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1485 transitions. Word has length 34 [2021-01-06 22:57:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:57:54,934 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1485 transitions. [2021-01-06 22:57:54,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 22:57:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1485 transitions. [2021-01-06 22:57:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 22:57:54,935 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:57:54,935 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] [2021-01-06 22:57:55,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:57:55,151 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:57:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:57:55,151 INFO L82 PathProgramCache]: Analyzing trace with hash 406022161, now seen corresponding path program 1 times [2021-01-06 22:57:55,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:57:55,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643273489] [2021-01-06 22:57:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:57:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:55,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643273489] [2021-01-06 22:57:55,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199885683] [2021-01-06 22:57:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:57:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:57:56,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-06 22:57:56,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:57:56,164 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-06 22:57:56,165 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:57:56,204 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,205 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-06 22:57:56,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:57:56,447 INFO L382 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 30 treesize of output 25 [2021-01-06 22:57:56,449 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:57:56,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,466 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:21 [2021-01-06 22:57:56,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 22:57:56,929 INFO L382 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 35 treesize of output 19 [2021-01-06 22:57:56,940 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,944 INFO L382 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 33 treesize of output 17 [2021-01-06 22:57:56,954 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,985 INFO L625 ElimStorePlain]: treesize reduction 77, result has 18.9 percent of original size [2021-01-06 22:57:56,986 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:57:56,986 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:69, output treesize:18 [2021-01-06 22:57:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:57:57,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:57:57,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 33 [2021-01-06 22:57:57,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130389783] [2021-01-06 22:57:57,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 22:57:57,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:57:57,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 22:57:57,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 22:57:57,064 INFO L87 Difference]: Start difference. First operand 664 states and 1485 transitions. Second operand 35 states. [2021-01-06 22:57:57,645 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-01-06 22:57:57,901 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-06 22:57:58,119 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-06 22:57:58,333 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-06 22:57:58,550 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-01-06 22:57:58,747 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-01-06 22:57:58,925 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-01-06 22:58:00,015 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-06 22:58:00,348 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-01-06 22:58:00,652 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-01-06 22:58:01,200 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-06 22:58:01,694 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-01-06 22:58:01,920 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 22:58:02,252 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-06 22:58:02,478 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-06 22:58:04,731 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-01-06 22:58:05,022 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-01-06 22:58:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:05,200 INFO L93 Difference]: Finished difference Result 1642 states and 3493 transitions. [2021-01-06 22:58:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-06 22:58:05,206 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 36 [2021-01-06 22:58:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:05,213 INFO L225 Difference]: With dead ends: 1642 [2021-01-06 22:58:05,214 INFO L226 Difference]: Without dead ends: 1505 [2021-01-06 22:58:05,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=986, Invalid=7944, Unknown=0, NotChecked=0, Total=8930 [2021-01-06 22:58:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-01-06 22:58:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 756. [2021-01-06 22:58:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2021-01-06 22:58:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1691 transitions. [2021-01-06 22:58:05,243 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1691 transitions. Word has length 36 [2021-01-06 22:58:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:05,244 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 1691 transitions. [2021-01-06 22:58:05,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 22:58:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1691 transitions. [2021-01-06 22:58:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 22:58:05,246 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:05,246 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] [2021-01-06 22:58:05,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 22:58:05,462 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:05,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1655316778, now seen corresponding path program 3 times [2021-01-06 22:58:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:05,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770962427] [2021-01-06 22:58:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 22:58:05,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770962427] [2021-01-06 22:58:05,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949568109] [2021-01-06 22:58:05,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:05,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 22:58:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:05,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 22:58:05,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 22:58:05,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:58:05,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2021-01-06 22:58:05,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751490287] [2021-01-06 22:58:05,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 22:58:05,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:05,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 22:58:05,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-01-06 22:58:05,783 INFO L87 Difference]: Start difference. First operand 756 states and 1691 transitions. Second operand 6 states. [2021-01-06 22:58:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:05,918 INFO L93 Difference]: Finished difference Result 1030 states and 2246 transitions. [2021-01-06 22:58:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 22:58:05,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-01-06 22:58:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:05,925 INFO L225 Difference]: With dead ends: 1030 [2021-01-06 22:58:05,925 INFO L226 Difference]: Without dead ends: 1030 [2021-01-06 22:58:05,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-06 22:58:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-01-06 22:58:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 770. [2021-01-06 22:58:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2021-01-06 22:58:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1732 transitions. [2021-01-06 22:58:05,949 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1732 transitions. Word has length 38 [2021-01-06 22:58:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:05,950 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 1732 transitions. [2021-01-06 22:58:05,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 22:58:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1732 transitions. [2021-01-06 22:58:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 22:58:05,952 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:05,952 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-01-06 22:58:06,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 22:58:06,166 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -935804946, now seen corresponding path program 5 times [2021-01-06 22:58:06,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248902000] [2021-01-06 22:58:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:06,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248902000] [2021-01-06 22:58:06,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644274470] [2021-01-06 22:58:06,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:06,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 22:58:06,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:06,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 22:58:06,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:06,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:06,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-06 22:58:06,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75091321] [2021-01-06 22:58:06,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:58:06,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:06,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:58:06,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:58:06,552 INFO L87 Difference]: Start difference. First operand 770 states and 1732 transitions. Second operand 15 states. [2021-01-06 22:58:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:06,791 INFO L93 Difference]: Finished difference Result 1200 states and 2579 transitions. [2021-01-06 22:58:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 22:58:06,792 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2021-01-06 22:58:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:06,800 INFO L225 Difference]: With dead ends: 1200 [2021-01-06 22:58:06,800 INFO L226 Difference]: Without dead ends: 1200 [2021-01-06 22:58:06,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-01-06 22:58:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-01-06 22:58:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 847. [2021-01-06 22:58:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2021-01-06 22:58:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1901 transitions. [2021-01-06 22:58:06,848 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1901 transitions. Word has length 41 [2021-01-06 22:58:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:06,848 INFO L481 AbstractCegarLoop]: Abstraction has 847 states and 1901 transitions. [2021-01-06 22:58:06,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:58:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1901 transitions. [2021-01-06 22:58:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 22:58:06,850 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:06,850 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] [2021-01-06 22:58:07,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 22:58:07,051 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash 158593968, now seen corresponding path program 2 times [2021-01-06 22:58:07,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:07,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232764154] [2021-01-06 22:58:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:58:07,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232764154] [2021-01-06 22:58:07,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181158837] [2021-01-06 22:58:07,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:07,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:58:07,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:07,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-06 22:58:07,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:08,017 INFO L382 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 [2021-01-06 22:58:08,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:08,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:08,037 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:08,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:51 [2021-01-06 22:58:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:58:08,478 INFO L382 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 71 treesize of output 43 [2021-01-06 22:58:08,480 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:08,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:08,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:08,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:58:09,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 22:58:09,255 INFO L382 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 78 treesize of output 30 [2021-01-06 22:58:09,272 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 22:58:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:58:09,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-01-06 22:58:09,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382208010] [2021-01-06 22:58:09,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 22:58:09,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 22:58:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1313, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 22:58:09,276 INFO L87 Difference]: Start difference. First operand 847 states and 1901 transitions. Second operand 21 states. [2021-01-06 22:58:09,899 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-01-06 22:58:10,214 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-06 22:58:10,421 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-01-06 22:58:10,653 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-06 22:58:10,937 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-06 22:58:11,150 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-01-06 22:58:11,391 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-01-06 22:58:11,964 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 22:58:12,178 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-01-06 22:58:12,343 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-01-06 22:58:12,565 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-06 22:58:12,840 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-01-06 22:58:13,060 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 22:58:13,258 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-01-06 22:58:13,451 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-01-06 22:58:13,952 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-06 22:58:14,168 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 22:58:14,429 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-06 22:58:14,698 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 22:58:14,905 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 22:58:15,117 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-06 22:58:16,845 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-01-06 22:58:17,081 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-06 22:58:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:17,386 INFO L93 Difference]: Finished difference Result 1868 states and 4039 transitions. [2021-01-06 22:58:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-06 22:58:17,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2021-01-06 22:58:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:17,397 INFO L225 Difference]: With dead ends: 1868 [2021-01-06 22:58:17,398 INFO L226 Difference]: Without dead ends: 1868 [2021-01-06 22:58:17,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=878, Invalid=6604, Unknown=0, NotChecked=0, Total=7482 [2021-01-06 22:58:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-01-06 22:58:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 969. [2021-01-06 22:58:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2021-01-06 22:58:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 2208 transitions. [2021-01-06 22:58:17,432 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 2208 transitions. Word has length 43 [2021-01-06 22:58:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:17,433 INFO L481 AbstractCegarLoop]: Abstraction has 969 states and 2208 transitions. [2021-01-06 22:58:17,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 22:58:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 2208 transitions. [2021-01-06 22:58:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 22:58:17,435 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:17,435 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] [2021-01-06 22:58:17,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 22:58:17,649 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash -606971035, now seen corresponding path program 4 times [2021-01-06 22:58:17,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:17,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083198410] [2021-01-06 22:58:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083198410] [2021-01-06 22:58:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102837656] [2021-01-06 22:58:17,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:17,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:58:17,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 22:58:17,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:18,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:18,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-06 22:58:18,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269683033] [2021-01-06 22:58:18,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 22:58:18,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:18,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 22:58:18,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:58:18,012 INFO L87 Difference]: Start difference. First operand 969 states and 2208 transitions. Second operand 12 states. [2021-01-06 22:58:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:18,204 INFO L93 Difference]: Finished difference Result 1644 states and 3569 transitions. [2021-01-06 22:58:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 22:58:18,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 22:58:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:18,212 INFO L225 Difference]: With dead ends: 1644 [2021-01-06 22:58:18,212 INFO L226 Difference]: Without dead ends: 1644 [2021-01-06 22:58:18,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 22:58:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-01-06 22:58:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 969. [2021-01-06 22:58:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2021-01-06 22:58:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 2208 transitions. [2021-01-06 22:58:18,240 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 2208 transitions. Word has length 45 [2021-01-06 22:58:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:18,240 INFO L481 AbstractCegarLoop]: Abstraction has 969 states and 2208 transitions. [2021-01-06 22:58:18,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 22:58:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 2208 transitions. [2021-01-06 22:58:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 22:58:18,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:18,243 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] [2021-01-06 22:58:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 22:58:18,457 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash 703668617, now seen corresponding path program 5 times [2021-01-06 22:58:18,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:18,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963535404] [2021-01-06 22:58:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:18,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963535404] [2021-01-06 22:58:18,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093198769] [2021-01-06 22:58:18,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:18,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 22:58:18,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:18,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 22:58:18,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:18,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:18,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-06 22:58:18,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814215300] [2021-01-06 22:58:18,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 22:58:18,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 22:58:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:58:18,848 INFO L87 Difference]: Start difference. First operand 969 states and 2208 transitions. Second operand 12 states. [2021-01-06 22:58:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:19,010 INFO L93 Difference]: Finished difference Result 1637 states and 3565 transitions. [2021-01-06 22:58:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 22:58:19,011 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 22:58:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:19,019 INFO L225 Difference]: With dead ends: 1637 [2021-01-06 22:58:19,020 INFO L226 Difference]: Without dead ends: 1637 [2021-01-06 22:58:19,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:58:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-01-06 22:58:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1073. [2021-01-06 22:58:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2021-01-06 22:58:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2482 transitions. [2021-01-06 22:58:19,050 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2482 transitions. Word has length 45 [2021-01-06 22:58:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:19,050 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 2482 transitions. [2021-01-06 22:58:19,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 22:58:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2482 transitions. [2021-01-06 22:58:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 22:58:19,053 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:19,053 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] [2021-01-06 22:58:19,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:19,269 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:19,270 INFO L82 PathProgramCache]: Analyzing trace with hash 577891045, now seen corresponding path program 6 times [2021-01-06 22:58:19,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:19,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062172853] [2021-01-06 22:58:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:58:19,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062172853] [2021-01-06 22:58:19,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316245450] [2021-01-06 22:58:19,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:19,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-06 22:58:19,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:19,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 22:58:19,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:19,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:19,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-01-06 22:58:19,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286666121] [2021-01-06 22:58:19,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 22:58:19,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:19,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 22:58:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 22:58:19,733 INFO L87 Difference]: Start difference. First operand 1073 states and 2482 transitions. Second operand 12 states. [2021-01-06 22:58:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:19,919 INFO L93 Difference]: Finished difference Result 1473 states and 3292 transitions. [2021-01-06 22:58:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 22:58:19,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 22:58:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:19,928 INFO L225 Difference]: With dead ends: 1473 [2021-01-06 22:58:19,928 INFO L226 Difference]: Without dead ends: 1473 [2021-01-06 22:58:19,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:58:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-01-06 22:58:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1117. [2021-01-06 22:58:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2021-01-06 22:58:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2584 transitions. [2021-01-06 22:58:19,955 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2584 transitions. Word has length 45 [2021-01-06 22:58:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:19,955 INFO L481 AbstractCegarLoop]: Abstraction has 1117 states and 2584 transitions. [2021-01-06 22:58:19,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 22:58:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2584 transitions. [2021-01-06 22:58:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 22:58:19,958 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:19,958 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2021-01-06 22:58:20,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-01-06 22:58:20,174 INFO L429 AbstractCegarLoop]: === Iteration 21 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:20,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1016879137, now seen corresponding path program 6 times [2021-01-06 22:58:20,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:20,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626738554] [2021-01-06 22:58:20,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:20,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626738554] [2021-01-06 22:58:20,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414955809] [2021-01-06 22:58:20,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:20,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 22:58:20,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:20,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 22:58:20,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:20,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:20,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 22:58:20,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507995504] [2021-01-06 22:58:20,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 22:58:20,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 22:58:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-06 22:58:20,749 INFO L87 Difference]: Start difference. First operand 1117 states and 2584 transitions. Second operand 17 states. [2021-01-06 22:58:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:21,011 INFO L93 Difference]: Finished difference Result 1650 states and 3650 transitions. [2021-01-06 22:58:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:58:21,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2021-01-06 22:58:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:21,021 INFO L225 Difference]: With dead ends: 1650 [2021-01-06 22:58:21,021 INFO L226 Difference]: Without dead ends: 1650 [2021-01-06 22:58:21,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:58:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-01-06 22:58:21,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1194. [2021-01-06 22:58:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2021-01-06 22:58:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 2753 transitions. [2021-01-06 22:58:21,050 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 2753 transitions. Word has length 48 [2021-01-06 22:58:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:21,051 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 2753 transitions. [2021-01-06 22:58:21,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 22:58:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 2753 transitions. [2021-01-06 22:58:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 22:58:21,054 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:21,054 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] [2021-01-06 22:58:21,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:21,269 INFO L429 AbstractCegarLoop]: === Iteration 22 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:21,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:21,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2109511870, now seen corresponding path program 3 times [2021-01-06 22:58:21,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:21,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095886716] [2021-01-06 22:58:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:22,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095886716] [2021-01-06 22:58:22,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406151237] [2021-01-06 22:58:22,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 22:58:22,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 22:58:22,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:22,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 86 conjunts are in the unsatisfiable core [2021-01-06 22:58:22,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:22,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-06 22:58:22,834 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:22,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:22,846 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:22,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-06 22:58:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:58:23,117 INFO L382 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 30 treesize of output 25 [2021-01-06 22:58:23,119 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:23,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:23,140 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:23,140 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:21 [2021-01-06 22:58:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:58:23,515 INFO L382 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 30 treesize of output 25 [2021-01-06 22:58:23,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:23,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:23,535 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:23,536 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:21 [2021-01-06 22:58:24,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 22:58:24,282 INFO L382 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 35 treesize of output 19 [2021-01-06 22:58:24,293 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:24,299 INFO L382 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 33 treesize of output 17 [2021-01-06 22:58:24,303 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:24,338 INFO L625 ElimStorePlain]: treesize reduction 110, result has 14.1 percent of original size [2021-01-06 22:58:24,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:24,339 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:69, output treesize:18 [2021-01-06 22:58:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:24,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:24,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 49 [2021-01-06 22:58:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760550686] [2021-01-06 22:58:24,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-06 22:58:24,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-06 22:58:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 22:58:24,436 INFO L87 Difference]: Start difference. First operand 1194 states and 2753 transitions. Second operand 51 states. [2021-01-06 22:58:24,714 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-01-06 22:58:25,342 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-01-06 22:58:25,625 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 22:58:25,849 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-01-06 22:58:26,067 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 22:58:26,321 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-01-06 22:58:26,575 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-01-06 22:58:26,754 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-01-06 22:58:27,624 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-01-06 22:58:28,097 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-01-06 22:58:28,500 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2021-01-06 22:58:28,974 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2021-01-06 22:58:30,233 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-01-06 22:58:30,677 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-01-06 22:58:31,115 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2021-01-06 22:58:31,523 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2021-01-06 22:58:31,843 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2021-01-06 22:58:32,016 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2021-01-06 22:58:32,290 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2021-01-06 22:58:33,280 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2021-01-06 22:58:33,470 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2021-01-06 22:58:33,932 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-01-06 22:58:34,118 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-01-06 22:58:34,354 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-01-06 22:58:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:36,263 INFO L93 Difference]: Finished difference Result 2860 states and 6254 transitions. [2021-01-06 22:58:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-01-06 22:58:36,264 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2021-01-06 22:58:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:36,273 INFO L225 Difference]: With dead ends: 2860 [2021-01-06 22:58:36,273 INFO L226 Difference]: Without dead ends: 2563 [2021-01-06 22:58:36,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4032 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1471, Invalid=11639, Unknown=0, NotChecked=0, Total=13110 [2021-01-06 22:58:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2021-01-06 22:58:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 1162. [2021-01-06 22:58:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2021-01-06 22:58:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 2677 transitions. [2021-01-06 22:58:36,310 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 2677 transitions. Word has length 51 [2021-01-06 22:58:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:36,311 INFO L481 AbstractCegarLoop]: Abstraction has 1162 states and 2677 transitions. [2021-01-06 22:58:36,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-06 22:58:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2677 transitions. [2021-01-06 22:58:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 22:58:36,313 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:36,313 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:58:36,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 22:58:36,527 INFO L429 AbstractCegarLoop]: === Iteration 23 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash -325356890, now seen corresponding path program 7 times [2021-01-06 22:58:36,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:36,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034353556] [2021-01-06 22:58:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:36,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034353556] [2021-01-06 22:58:36,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379944310] [2021-01-06 22:58:36,663 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:36,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 22:58:36,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:36,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:36,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-06 22:58:36,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079612488] [2021-01-06 22:58:36,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 22:58:36,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:36,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 22:58:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-06 22:58:36,899 INFO L87 Difference]: Start difference. First operand 1162 states and 2677 transitions. Second operand 14 states. [2021-01-06 22:58:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:37,125 INFO L93 Difference]: Finished difference Result 1979 states and 4329 transitions. [2021-01-06 22:58:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:58:37,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2021-01-06 22:58:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:37,132 INFO L225 Difference]: With dead ends: 1979 [2021-01-06 22:58:37,132 INFO L226 Difference]: Without dead ends: 1979 [2021-01-06 22:58:37,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-01-06 22:58:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-01-06 22:58:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1162. [2021-01-06 22:58:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2021-01-06 22:58:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 2677 transitions. [2021-01-06 22:58:37,164 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 2677 transitions. Word has length 52 [2021-01-06 22:58:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:37,165 INFO L481 AbstractCegarLoop]: Abstraction has 1162 states and 2677 transitions. [2021-01-06 22:58:37,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 22:58:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2677 transitions. [2021-01-06 22:58:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 22:58:37,167 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:37,168 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:58:37,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:37,384 INFO L429 AbstractCegarLoop]: === Iteration 24 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash 985282762, now seen corresponding path program 8 times [2021-01-06 22:58:37,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:37,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996983090] [2021-01-06 22:58:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:37,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996983090] [2021-01-06 22:58:37,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572192070] [2021-01-06 22:58:37,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:37,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:58:37,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 22:58:37,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:37,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-06 22:58:37,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134558710] [2021-01-06 22:58:37,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 22:58:37,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:37,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 22:58:37,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-06 22:58:37,771 INFO L87 Difference]: Start difference. First operand 1162 states and 2677 transitions. Second operand 14 states. [2021-01-06 22:58:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:37,984 INFO L93 Difference]: Finished difference Result 2122 states and 4632 transitions. [2021-01-06 22:58:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 22:58:37,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2021-01-06 22:58:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:37,990 INFO L225 Difference]: With dead ends: 2122 [2021-01-06 22:58:37,991 INFO L226 Difference]: Without dead ends: 2122 [2021-01-06 22:58:37,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-01-06 22:58:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-01-06 22:58:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1192. [2021-01-06 22:58:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2021-01-06 22:58:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 2742 transitions. [2021-01-06 22:58:38,024 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 2742 transitions. Word has length 52 [2021-01-06 22:58:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:38,024 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 2742 transitions. [2021-01-06 22:58:38,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 22:58:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 2742 transitions. [2021-01-06 22:58:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 22:58:38,027 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:38,027 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:58:38,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 22:58:38,241 INFO L429 AbstractCegarLoop]: === Iteration 25 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 859505190, now seen corresponding path program 9 times [2021-01-06 22:58:38,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:38,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824016995] [2021-01-06 22:58:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:38,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824016995] [2021-01-06 22:58:38,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446365818] [2021-01-06 22:58:38,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:38,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-06 22:58:38,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:38,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 22:58:38,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:38,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:38,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-06 22:58:38,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919640447] [2021-01-06 22:58:38,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 22:58:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 22:58:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-06 22:58:38,739 INFO L87 Difference]: Start difference. First operand 1192 states and 2742 transitions. Second operand 14 states. [2021-01-06 22:58:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:38,932 INFO L93 Difference]: Finished difference Result 2100 states and 4604 transitions. [2021-01-06 22:58:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 22:58:38,933 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2021-01-06 22:58:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:38,938 INFO L225 Difference]: With dead ends: 2100 [2021-01-06 22:58:38,938 INFO L226 Difference]: Without dead ends: 2100 [2021-01-06 22:58:38,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-01-06 22:58:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-01-06 22:58:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1310. [2021-01-06 22:58:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2021-01-06 22:58:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 3053 transitions. [2021-01-06 22:58:38,986 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 3053 transitions. Word has length 52 [2021-01-06 22:58:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:38,986 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 3053 transitions. [2021-01-06 22:58:38,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 22:58:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 3053 transitions. [2021-01-06 22:58:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 22:58:38,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:38,989 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:58:39,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 22:58:39,204 INFO L429 AbstractCegarLoop]: === Iteration 26 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash -874366646, now seen corresponding path program 10 times [2021-01-06 22:58:39,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:39,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835987631] [2021-01-06 22:58:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:58:39,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835987631] [2021-01-06 22:58:39,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643981656] [2021-01-06 22:58:39,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:39,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:58:39,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:39,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 22:58:39,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:39,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:39,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-01-06 22:58:39,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591349770] [2021-01-06 22:58:39,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 22:58:39,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 22:58:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-06 22:58:39,558 INFO L87 Difference]: Start difference. First operand 1310 states and 3053 transitions. Second operand 14 states. [2021-01-06 22:58:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:39,780 INFO L93 Difference]: Finished difference Result 1875 states and 4203 transitions. [2021-01-06 22:58:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 22:58:39,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2021-01-06 22:58:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:39,785 INFO L225 Difference]: With dead ends: 1875 [2021-01-06 22:58:39,785 INFO L226 Difference]: Without dead ends: 1875 [2021-01-06 22:58:39,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-01-06 22:58:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2021-01-06 22:58:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1368. [2021-01-06 22:58:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2021-01-06 22:58:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3194 transitions. [2021-01-06 22:58:39,818 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3194 transitions. Word has length 52 [2021-01-06 22:58:39,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:39,818 INFO L481 AbstractCegarLoop]: Abstraction has 1368 states and 3194 transitions. [2021-01-06 22:58:39,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 22:58:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3194 transitions. [2021-01-06 22:58:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 22:58:39,821 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:39,821 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-01-06 22:58:40,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 22:58:40,037 INFO L429 AbstractCegarLoop]: === Iteration 27 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash 123318414, now seen corresponding path program 7 times [2021-01-06 22:58:40,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:40,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797662536] [2021-01-06 22:58:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:40,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797662536] [2021-01-06 22:58:40,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130035416] [2021-01-06 22:58:40,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:58:40,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:58:40,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:40,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-06 22:58:40,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172532149] [2021-01-06 22:58:40,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 22:58:40,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:40,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 22:58:40,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-06 22:58:40,478 INFO L87 Difference]: Start difference. First operand 1368 states and 3194 transitions. Second operand 19 states. [2021-01-06 22:58:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:40,749 INFO L93 Difference]: Finished difference Result 1977 states and 4402 transitions. [2021-01-06 22:58:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 22:58:40,750 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2021-01-06 22:58:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:40,755 INFO L225 Difference]: With dead ends: 1977 [2021-01-06 22:58:40,755 INFO L226 Difference]: Without dead ends: 1977 [2021-01-06 22:58:40,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2021-01-06 22:58:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-01-06 22:58:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1431. [2021-01-06 22:58:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2021-01-06 22:58:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3324 transitions. [2021-01-06 22:58:40,787 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3324 transitions. Word has length 55 [2021-01-06 22:58:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:40,787 INFO L481 AbstractCegarLoop]: Abstraction has 1431 states and 3324 transitions. [2021-01-06 22:58:40,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 22:58:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3324 transitions. [2021-01-06 22:58:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 22:58:40,791 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:40,791 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] [2021-01-06 22:58:41,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 22:58:41,004 INFO L429 AbstractCegarLoop]: === Iteration 28 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash 831355711, now seen corresponding path program 4 times [2021-01-06 22:58:41,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:41,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376835564] [2021-01-06 22:58:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:58:42,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376835564] [2021-01-06 22:58:42,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097748876] [2021-01-06 22:58:42,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:42,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:58:42,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:42,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 86 conjunts are in the unsatisfiable core [2021-01-06 22:58:42,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:42,907 INFO L382 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 [2021-01-06 22:58:42,908 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:42,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:42,925 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:42,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:51 [2021-01-06 22:58:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:58:43,391 INFO L382 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 71 treesize of output 43 [2021-01-06 22:58:43,393 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:43,412 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:43,414 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:43,414 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:58:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:58:43,877 INFO L382 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 71 treesize of output 43 [2021-01-06 22:58:43,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:58:43,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:58:43,898 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:58:43,898 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:58:44,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 22:58:45,008 INFO L382 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 80 treesize of output 32 [2021-01-06 22:58:45,014 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 22:58:45,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:58:45,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-01-06 22:58:45,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890266510] [2021-01-06 22:58:45,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 22:58:45,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:45,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 22:58:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2418, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 22:58:45,017 INFO L87 Difference]: Start difference. First operand 1431 states and 3324 transitions. Second operand 27 states. [2021-01-06 22:58:45,890 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-01-06 22:58:46,298 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-01-06 22:58:46,573 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-01-06 22:58:46,862 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-01-06 22:58:47,245 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2021-01-06 22:58:47,570 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-01-06 22:58:47,893 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-01-06 22:58:48,148 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-01-06 22:58:48,678 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-01-06 22:58:48,945 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-01-06 22:58:49,151 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-01-06 22:58:49,419 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-01-06 22:58:49,786 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-01-06 22:58:50,096 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-01-06 22:58:50,357 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-01-06 22:58:50,602 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-01-06 22:58:50,850 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-01-06 22:58:51,253 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-01-06 22:58:51,522 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-01-06 22:58:51,874 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2021-01-06 22:58:52,213 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 22:58:52,471 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 22:58:52,760 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-01-06 22:58:52,974 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 22:58:53,175 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-01-06 22:58:53,367 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-01-06 22:58:53,896 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-06 22:58:54,123 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 22:58:54,398 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-06 22:58:54,970 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 22:58:55,182 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-01-06 22:58:55,406 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 22:58:55,619 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2021-01-06 22:58:55,856 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-06 22:58:56,096 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-01-06 22:58:56,503 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-01-06 22:58:57,922 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 22:58:58,431 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-01-06 22:58:58,670 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-06 22:58:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:58:59,032 INFO L93 Difference]: Finished difference Result 3881 states and 8541 transitions. [2021-01-06 22:58:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-01-06 22:58:59,032 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2021-01-06 22:58:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:58:59,041 INFO L225 Difference]: With dead ends: 3881 [2021-01-06 22:58:59,041 INFO L226 Difference]: Without dead ends: 3881 [2021-01-06 22:58:59,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3592 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1482, Invalid=12090, Unknown=0, NotChecked=0, Total=13572 [2021-01-06 22:58:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2021-01-06 22:58:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 1721. [2021-01-06 22:58:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2021-01-06 22:58:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 4083 transitions. [2021-01-06 22:58:59,094 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 4083 transitions. Word has length 58 [2021-01-06 22:58:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:58:59,095 INFO L481 AbstractCegarLoop]: Abstraction has 1721 states and 4083 transitions. [2021-01-06 22:58:59,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 22:58:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 4083 transitions. [2021-01-06 22:58:59,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 22:58:59,098 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:58:59,098 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:58:59,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 22:58:59,312 INFO L429 AbstractCegarLoop]: === Iteration 29 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:58:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:58:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1293492155, now seen corresponding path program 11 times [2021-01-06 22:58:59,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:58:59,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021641634] [2021-01-06 22:58:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:58:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:58:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021641634] [2021-01-06 22:58:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775585865] [2021-01-06 22:58:59,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:58:59,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 22:58:59,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:58:59,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:58:59,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:58:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:58:59,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:58:59,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-06 22:58:59,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355113037] [2021-01-06 22:58:59,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 22:58:59,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:58:59,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 22:58:59,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 22:58:59,901 INFO L87 Difference]: Start difference. First operand 1721 states and 4083 transitions. Second operand 16 states. [2021-01-06 22:59:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:00,251 INFO L93 Difference]: Finished difference Result 2847 states and 6409 transitions. [2021-01-06 22:59:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 22:59:00,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-01-06 22:59:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:00,260 INFO L225 Difference]: With dead ends: 2847 [2021-01-06 22:59:00,260 INFO L226 Difference]: Without dead ends: 2847 [2021-01-06 22:59:00,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2021-01-06 22:59:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-01-06 22:59:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1735. [2021-01-06 22:59:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2021-01-06 22:59:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 4122 transitions. [2021-01-06 22:59:00,303 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 4122 transitions. Word has length 59 [2021-01-06 22:59:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:00,304 INFO L481 AbstractCegarLoop]: Abstraction has 1735 states and 4122 transitions. [2021-01-06 22:59:00,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 22:59:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 4122 transitions. [2021-01-06 22:59:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 22:59:00,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:00,307 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:00,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:00,521 INFO L429 AbstractCegarLoop]: === Iteration 30 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash 17147497, now seen corresponding path program 12 times [2021-01-06 22:59:00,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:00,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516752527] [2021-01-06 22:59:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:00,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516752527] [2021-01-06 22:59:00,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448629375] [2021-01-06 22:59:00,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:01,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 22:59:01,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:01,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:59:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:01,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:01,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-06 22:59:01,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443090480] [2021-01-06 22:59:01,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 22:59:01,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:01,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 22:59:01,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 22:59:01,200 INFO L87 Difference]: Start difference. First operand 1735 states and 4122 transitions. Second operand 16 states. [2021-01-06 22:59:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:01,513 INFO L93 Difference]: Finished difference Result 2954 states and 6636 transitions. [2021-01-06 22:59:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 22:59:01,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-01-06 22:59:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:01,520 INFO L225 Difference]: With dead ends: 2954 [2021-01-06 22:59:01,520 INFO L226 Difference]: Without dead ends: 2954 [2021-01-06 22:59:01,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2021-01-06 22:59:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-01-06 22:59:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1735. [2021-01-06 22:59:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2021-01-06 22:59:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 4122 transitions. [2021-01-06 22:59:01,579 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 4122 transitions. Word has length 59 [2021-01-06 22:59:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:01,579 INFO L481 AbstractCegarLoop]: Abstraction has 1735 states and 4122 transitions. [2021-01-06 22:59:01,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 22:59:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 4122 transitions. [2021-01-06 22:59:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 22:59:01,582 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:01,582 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:01,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:01,796 INFO L429 AbstractCegarLoop]: === Iteration 31 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash -108630075, now seen corresponding path program 13 times [2021-01-06 22:59:01,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:01,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27069156] [2021-01-06 22:59:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:01,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27069156] [2021-01-06 22:59:01,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013477188] [2021-01-06 22:59:01,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:02,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:59:02,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:02,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:02,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-06 22:59:02,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959256126] [2021-01-06 22:59:02,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 22:59:02,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:02,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 22:59:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 22:59:02,216 INFO L87 Difference]: Start difference. First operand 1735 states and 4122 transitions. Second operand 16 states. [2021-01-06 22:59:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:02,520 INFO L93 Difference]: Finished difference Result 3048 states and 6821 transitions. [2021-01-06 22:59:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 22:59:02,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-01-06 22:59:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:02,526 INFO L225 Difference]: With dead ends: 3048 [2021-01-06 22:59:02,526 INFO L226 Difference]: Without dead ends: 3048 [2021-01-06 22:59:02,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-01-06 22:59:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-01-06 22:59:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1735. [2021-01-06 22:59:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2021-01-06 22:59:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 4122 transitions. [2021-01-06 22:59:02,562 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 4122 transitions. Word has length 59 [2021-01-06 22:59:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:02,562 INFO L481 AbstractCegarLoop]: Abstraction has 1735 states and 4122 transitions. [2021-01-06 22:59:02,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 22:59:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 4122 transitions. [2021-01-06 22:59:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 22:59:02,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:02,565 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:02,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:02,779 INFO L429 AbstractCegarLoop]: === Iteration 32 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1842501911, now seen corresponding path program 14 times [2021-01-06 22:59:02,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:02,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058542445] [2021-01-06 22:59:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:02,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058542445] [2021-01-06 22:59:02,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376007201] [2021-01-06 22:59:02,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:03,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:59:03,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:59:03,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:03,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:03,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-06 22:59:03,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589433286] [2021-01-06 22:59:03,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 22:59:03,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 22:59:03,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 22:59:03,276 INFO L87 Difference]: Start difference. First operand 1735 states and 4122 transitions. Second operand 16 states. [2021-01-06 22:59:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:03,573 INFO L93 Difference]: Finished difference Result 2967 states and 6670 transitions. [2021-01-06 22:59:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:03,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-01-06 22:59:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:03,580 INFO L225 Difference]: With dead ends: 2967 [2021-01-06 22:59:03,580 INFO L226 Difference]: Without dead ends: 2967 [2021-01-06 22:59:03,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-01-06 22:59:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1883. [2021-01-06 22:59:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2021-01-06 22:59:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 4518 transitions. [2021-01-06 22:59:03,623 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 4518 transitions. Word has length 59 [2021-01-06 22:59:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:03,624 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states and 4518 transitions. [2021-01-06 22:59:03,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 22:59:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 4518 transitions. [2021-01-06 22:59:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 22:59:03,627 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:03,627 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:03,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-06 22:59:03,842 INFO L429 AbstractCegarLoop]: === Iteration 33 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1005903685, now seen corresponding path program 15 times [2021-01-06 22:59:03,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:03,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110434437] [2021-01-06 22:59:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 116 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:59:04,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110434437] [2021-01-06 22:59:04,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395673097] [2021-01-06 22:59:04,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:04,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 22:59:04,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:04,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 22:59:04,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:04,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:04,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-01-06 22:59:04,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772505840] [2021-01-06 22:59:04,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 22:59:04,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 22:59:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 22:59:04,471 INFO L87 Difference]: Start difference. First operand 1883 states and 4518 transitions. Second operand 16 states. [2021-01-06 22:59:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:04,782 INFO L93 Difference]: Finished difference Result 2635 states and 6061 transitions. [2021-01-06 22:59:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:04,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2021-01-06 22:59:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:04,785 INFO L225 Difference]: With dead ends: 2635 [2021-01-06 22:59:04,785 INFO L226 Difference]: Without dead ends: 2635 [2021-01-06 22:59:04,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2021-01-06 22:59:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1955. [2021-01-06 22:59:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2021-01-06 22:59:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 4698 transitions. [2021-01-06 22:59:04,811 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 4698 transitions. Word has length 59 [2021-01-06 22:59:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:04,812 INFO L481 AbstractCegarLoop]: Abstraction has 1955 states and 4698 transitions. [2021-01-06 22:59:04,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 22:59:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 4698 transitions. [2021-01-06 22:59:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 22:59:04,814 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:04,814 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2021-01-06 22:59:05,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:05,015 INFO L429 AbstractCegarLoop]: === Iteration 34 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1068928127, now seen corresponding path program 8 times [2021-01-06 22:59:05,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:05,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606501537] [2021-01-06 22:59:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:59:05,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606501537] [2021-01-06 22:59:05,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894230557] [2021-01-06 22:59:05,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:05,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:59:05,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:59:05,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:05,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-06 22:59:05,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790197101] [2021-01-06 22:59:05,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 22:59:05,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:05,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 22:59:05,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-01-06 22:59:05,591 INFO L87 Difference]: Start difference. First operand 1955 states and 4698 transitions. Second operand 21 states. [2021-01-06 22:59:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:06,003 INFO L93 Difference]: Finished difference Result 2682 states and 6131 transitions. [2021-01-06 22:59:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 22:59:06,004 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 62 [2021-01-06 22:59:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:06,008 INFO L225 Difference]: With dead ends: 2682 [2021-01-06 22:59:06,008 INFO L226 Difference]: Without dead ends: 2682 [2021-01-06 22:59:06,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-01-06 22:59:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-01-06 22:59:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2018. [2021-01-06 22:59:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2018 states. [2021-01-06 22:59:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 4828 transitions. [2021-01-06 22:59:06,049 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 4828 transitions. Word has length 62 [2021-01-06 22:59:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:06,050 INFO L481 AbstractCegarLoop]: Abstraction has 2018 states and 4828 transitions. [2021-01-06 22:59:06,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 22:59:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 4828 transitions. [2021-01-06 22:59:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:06,053 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:06,053 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:06,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 22:59:06,267 INFO L429 AbstractCegarLoop]: === Iteration 35 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:06,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:06,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1221479994, now seen corresponding path program 16 times [2021-01-06 22:59:06,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:06,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756599838] [2021-01-06 22:59:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:06,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756599838] [2021-01-06 22:59:06,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171355818] [2021-01-06 22:59:06,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:06,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:59:06,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:06,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:06,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:06,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:06,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 22:59:06,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912244086] [2021-01-06 22:59:06,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:06,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:06,803 INFO L87 Difference]: Start difference. First operand 2018 states and 4828 transitions. Second operand 18 states. [2021-01-06 22:59:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:07,235 INFO L93 Difference]: Finished difference Result 3258 states and 7374 transitions. [2021-01-06 22:59:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 22:59:07,236 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:07,242 INFO L225 Difference]: With dead ends: 3258 [2021-01-06 22:59:07,242 INFO L226 Difference]: Without dead ends: 3258 [2021-01-06 22:59:07,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-01-06 22:59:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2021-01-06 22:59:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 2032. [2021-01-06 22:59:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2021-01-06 22:59:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 4867 transitions. [2021-01-06 22:59:07,292 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 4867 transitions. Word has length 66 [2021-01-06 22:59:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:07,292 INFO L481 AbstractCegarLoop]: Abstraction has 2032 states and 4867 transitions. [2021-01-06 22:59:07,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 4867 transitions. [2021-01-06 22:59:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:07,298 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:07,298 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:07,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:07,513 INFO L429 AbstractCegarLoop]: === Iteration 36 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash 89159658, now seen corresponding path program 17 times [2021-01-06 22:59:07,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:07,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070659973] [2021-01-06 22:59:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:07,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070659973] [2021-01-06 22:59:07,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218082574] [2021-01-06 22:59:07,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:08,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-06 22:59:08,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:08,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:08,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:08,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:08,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 22:59:08,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027001871] [2021-01-06 22:59:08,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:08,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:08,236 INFO L87 Difference]: Start difference. First operand 2032 states and 4867 transitions. Second operand 18 states. [2021-01-06 22:59:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:08,641 INFO L93 Difference]: Finished difference Result 3409 states and 7694 transitions. [2021-01-06 22:59:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 22:59:08,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:08,645 INFO L225 Difference]: With dead ends: 3409 [2021-01-06 22:59:08,646 INFO L226 Difference]: Without dead ends: 3409 [2021-01-06 22:59:08,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2021-01-06 22:59:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2021-01-06 22:59:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 2032. [2021-01-06 22:59:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2021-01-06 22:59:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 4867 transitions. [2021-01-06 22:59:08,685 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 4867 transitions. Word has length 66 [2021-01-06 22:59:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:08,685 INFO L481 AbstractCegarLoop]: Abstraction has 2032 states and 4867 transitions. [2021-01-06 22:59:08,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 4867 transitions. [2021-01-06 22:59:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:08,688 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:08,688 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:08,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 22:59:08,899 INFO L429 AbstractCegarLoop]: === Iteration 37 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash -36617914, now seen corresponding path program 18 times [2021-01-06 22:59:08,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:08,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382737139] [2021-01-06 22:59:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:09,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382737139] [2021-01-06 22:59:09,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960584372] [2021-01-06 22:59:09,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:09,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-06 22:59:09,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:09,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:09,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:09,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:09,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 22:59:09,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099965772] [2021-01-06 22:59:09,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:09,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:09,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:09,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:09,528 INFO L87 Difference]: Start difference. First operand 2032 states and 4867 transitions. Second operand 18 states. [2021-01-06 22:59:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:09,895 INFO L93 Difference]: Finished difference Result 3434 states and 7753 transitions. [2021-01-06 22:59:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 22:59:09,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:09,902 INFO L225 Difference]: With dead ends: 3434 [2021-01-06 22:59:09,902 INFO L226 Difference]: Without dead ends: 3434 [2021-01-06 22:59:09,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-01-06 22:59:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2021-01-06 22:59:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2032. [2021-01-06 22:59:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2032 states. [2021-01-06 22:59:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 4867 transitions. [2021-01-06 22:59:09,964 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 4867 transitions. Word has length 66 [2021-01-06 22:59:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:09,965 INFO L481 AbstractCegarLoop]: Abstraction has 2032 states and 4867 transitions. [2021-01-06 22:59:09,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 4867 transitions. [2021-01-06 22:59:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:09,968 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:09,968 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:10,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:10,182 INFO L429 AbstractCegarLoop]: === Iteration 38 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:10,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1704534349, now seen corresponding path program 5 times [2021-01-06 22:59:10,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:10,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785351430] [2021-01-06 22:59:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:59:12,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785351430] [2021-01-06 22:59:12,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826691318] [2021-01-06 22:59:12,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:12,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 22:59:12,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:12,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 101 conjunts are in the unsatisfiable core [2021-01-06 22:59:12,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:13,090 INFO L382 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 [2021-01-06 22:59:13,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:13,112 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:13,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:13,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:57 [2021-01-06 22:59:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:13,786 INFO L382 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 71 treesize of output 43 [2021-01-06 22:59:13,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:13,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:13,821 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:13,822 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:62 [2021-01-06 22:59:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:14,446 INFO L382 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 51 treesize of output 38 [2021-01-06 22:59:14,451 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:14,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:14,474 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:14,474 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:42 [2021-01-06 22:59:15,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:15,147 INFO L382 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 51 treesize of output 38 [2021-01-06 22:59:15,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:15,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:15,185 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:15,185 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:42 [2021-01-06 22:59:16,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 22:59:16,690 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-01-06 22:59:16,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:16,748 INFO L382 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 54 treesize of output 30 [2021-01-06 22:59:16,754 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 22:59:16,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:59:16,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-01-06 22:59:16,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126728721] [2021-01-06 22:59:16,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-06 22:59:16,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-06 22:59:16,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4070, Unknown=0, NotChecked=0, Total=4556 [2021-01-06 22:59:16,756 INFO L87 Difference]: Start difference. First operand 2032 states and 4867 transitions. Second operand 39 states. [2021-01-06 22:59:17,288 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 22:59:17,626 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-01-06 22:59:17,916 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-01-06 22:59:18,405 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2021-01-06 22:59:19,104 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2021-01-06 22:59:19,307 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2021-01-06 22:59:19,574 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-01-06 22:59:20,131 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2021-01-06 22:59:20,426 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-01-06 22:59:20,639 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-01-06 22:59:20,854 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-01-06 22:59:21,125 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-01-06 22:59:21,300 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-01-06 22:59:21,519 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2021-01-06 22:59:21,845 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-01-06 22:59:22,040 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-01-06 22:59:22,361 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-01-06 22:59:22,582 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-01-06 22:59:22,896 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-01-06 22:59:23,412 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-01-06 22:59:23,598 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-01-06 22:59:23,918 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-01-06 22:59:24,282 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-01-06 22:59:24,516 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-01-06 22:59:24,918 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 22:59:25,404 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-01-06 22:59:26,580 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 22:59:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:26,690 INFO L93 Difference]: Finished difference Result 4809 states and 10941 transitions. [2021-01-06 22:59:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-06 22:59:26,694 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 66 [2021-01-06 22:59:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:26,702 INFO L225 Difference]: With dead ends: 4809 [2021-01-06 22:59:26,702 INFO L226 Difference]: Without dead ends: 4627 [2021-01-06 22:59:26,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3967 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1449, Invalid=9681, Unknown=0, NotChecked=0, Total=11130 [2021-01-06 22:59:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-01-06 22:59:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 2878. [2021-01-06 22:59:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2021-01-06 22:59:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 6876 transitions. [2021-01-06 22:59:26,772 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 6876 transitions. Word has length 66 [2021-01-06 22:59:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:26,772 INFO L481 AbstractCegarLoop]: Abstraction has 2878 states and 6876 transitions. [2021-01-06 22:59:26,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-06 22:59:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 6876 transitions. [2021-01-06 22:59:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:26,777 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:26,777 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:26,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 22:59:26,991 INFO L429 AbstractCegarLoop]: === Iteration 39 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1770489750, now seen corresponding path program 19 times [2021-01-06 22:59:26,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:26,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38891381] [2021-01-06 22:59:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:27,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38891381] [2021-01-06 22:59:27,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746466112] [2021-01-06 22:59:27,219 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:27,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:27,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:27,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:27,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 22:59:27,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437045199] [2021-01-06 22:59:27,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:27,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:27,535 INFO L87 Difference]: Start difference. First operand 2878 states and 6876 transitions. Second operand 18 states. [2021-01-06 22:59:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:27,883 INFO L93 Difference]: Finished difference Result 4622 states and 10409 transitions. [2021-01-06 22:59:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 22:59:27,884 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:27,889 INFO L225 Difference]: With dead ends: 4622 [2021-01-06 22:59:27,889 INFO L226 Difference]: Without dead ends: 4622 [2021-01-06 22:59:27,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2021-01-06 22:59:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-01-06 22:59:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 2848. [2021-01-06 22:59:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2021-01-06 22:59:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 6811 transitions. [2021-01-06 22:59:27,932 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 6811 transitions. Word has length 66 [2021-01-06 22:59:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:27,932 INFO L481 AbstractCegarLoop]: Abstraction has 2848 states and 6811 transitions. [2021-01-06 22:59:27,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 6811 transitions. [2021-01-06 22:59:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:27,935 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:27,935 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:28,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-06 22:59:28,136 INFO L429 AbstractCegarLoop]: === Iteration 40 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1077915846, now seen corresponding path program 20 times [2021-01-06 22:59:28,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:28,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019782521] [2021-01-06 22:59:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:28,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019782521] [2021-01-06 22:59:28,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618502667] [2021-01-06 22:59:28,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:28,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:59:28,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:28,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:28,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:28,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:28,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 22:59:28,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423250392] [2021-01-06 22:59:28,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:28,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:28,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:28,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:28,663 INFO L87 Difference]: Start difference. First operand 2848 states and 6811 transitions. Second operand 18 states. [2021-01-06 22:59:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:29,017 INFO L93 Difference]: Finished difference Result 4490 states and 10152 transitions. [2021-01-06 22:59:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 22:59:29,020 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:29,026 INFO L225 Difference]: With dead ends: 4490 [2021-01-06 22:59:29,026 INFO L226 Difference]: Without dead ends: 4490 [2021-01-06 22:59:29,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-01-06 22:59:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2021-01-06 22:59:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 2982. [2021-01-06 22:59:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2982 states. [2021-01-06 22:59:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7168 transitions. [2021-01-06 22:59:29,066 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7168 transitions. Word has length 66 [2021-01-06 22:59:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:29,066 INFO L481 AbstractCegarLoop]: Abstraction has 2982 states and 7168 transitions. [2021-01-06 22:59:29,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7168 transitions. [2021-01-06 22:59:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 22:59:29,069 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:29,069 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:29,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-06 22:59:29,270 INFO L429 AbstractCegarLoop]: === Iteration 41 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -279602966, now seen corresponding path program 21 times [2021-01-06 22:59:29,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:29,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949684720] [2021-01-06 22:59:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 160 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:59:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949684720] [2021-01-06 22:59:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906122330] [2021-01-06 22:59:29,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:29,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-06 22:59:29,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:29,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:29,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:30,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:30,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-01-06 22:59:30,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808535200] [2021-01-06 22:59:30,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 22:59:30,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:30,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 22:59:30,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-01-06 22:59:30,036 INFO L87 Difference]: Start difference. First operand 2982 states and 7168 transitions. Second operand 18 states. [2021-01-06 22:59:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:30,381 INFO L93 Difference]: Finished difference Result 3944 states and 9146 transitions. [2021-01-06 22:59:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 22:59:30,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2021-01-06 22:59:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:30,388 INFO L225 Difference]: With dead ends: 3944 [2021-01-06 22:59:30,388 INFO L226 Difference]: Without dead ends: 3944 [2021-01-06 22:59:30,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2021-01-06 22:59:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2021-01-06 22:59:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3082. [2021-01-06 22:59:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2021-01-06 22:59:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 7424 transitions. [2021-01-06 22:59:30,445 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 7424 transitions. Word has length 66 [2021-01-06 22:59:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:30,446 INFO L481 AbstractCegarLoop]: Abstraction has 3082 states and 7424 transitions. [2021-01-06 22:59:30,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 22:59:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 7424 transitions. [2021-01-06 22:59:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 22:59:30,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:30,449 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:30,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-06 22:59:30,650 INFO L429 AbstractCegarLoop]: === Iteration 42 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:30,652 INFO L82 PathProgramCache]: Analyzing trace with hash 196050039, now seen corresponding path program 22 times [2021-01-06 22:59:30,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:30,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734716146] [2021-01-06 22:59:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:30,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734716146] [2021-01-06 22:59:30,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544852056] [2021-01-06 22:59:30,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:30,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:59:30,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:30,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:30,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:31,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:31,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-06 22:59:31,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155676428] [2021-01-06 22:59:31,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:59:31,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:59:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:59:31,101 INFO L87 Difference]: Start difference. First operand 3082 states and 7424 transitions. Second operand 15 states. [2021-01-06 22:59:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:31,418 INFO L93 Difference]: Finished difference Result 5099 states and 11500 transitions. [2021-01-06 22:59:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:31,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2021-01-06 22:59:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:31,428 INFO L225 Difference]: With dead ends: 5099 [2021-01-06 22:59:31,428 INFO L226 Difference]: Without dead ends: 5099 [2021-01-06 22:59:31,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2021-01-06 22:59:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 3110. [2021-01-06 22:59:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2021-01-06 22:59:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 7500 transitions. [2021-01-06 22:59:31,502 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 7500 transitions. Word has length 67 [2021-01-06 22:59:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:31,502 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 7500 transitions. [2021-01-06 22:59:31,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:59:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 7500 transitions. [2021-01-06 22:59:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 22:59:31,507 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:31,508 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:31,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:31,722 INFO L429 AbstractCegarLoop]: === Iteration 43 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1506689691, now seen corresponding path program 23 times [2021-01-06 22:59:31,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:31,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237500359] [2021-01-06 22:59:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:31,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237500359] [2021-01-06 22:59:31,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459784767] [2021-01-06 22:59:31,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:32,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 22:59:32,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:32,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:32,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:32,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:32,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-06 22:59:32,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536349939] [2021-01-06 22:59:32,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:59:32,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:32,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:59:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:59:32,334 INFO L87 Difference]: Start difference. First operand 3110 states and 7500 transitions. Second operand 15 states. [2021-01-06 22:59:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:32,653 INFO L93 Difference]: Finished difference Result 5323 states and 12099 transitions. [2021-01-06 22:59:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:32,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2021-01-06 22:59:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:32,661 INFO L225 Difference]: With dead ends: 5323 [2021-01-06 22:59:32,662 INFO L226 Difference]: Without dead ends: 5323 [2021-01-06 22:59:32,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:32,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2021-01-06 22:59:32,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 3474. [2021-01-06 22:59:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2021-01-06 22:59:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 8422 transitions. [2021-01-06 22:59:32,718 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 8422 transitions. Word has length 67 [2021-01-06 22:59:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:32,718 INFO L481 AbstractCegarLoop]: Abstraction has 3474 states and 8422 transitions. [2021-01-06 22:59:32,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:59:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 8422 transitions. [2021-01-06 22:59:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 22:59:32,722 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:32,722 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:32,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-06 22:59:32,924 INFO L429 AbstractCegarLoop]: === Iteration 44 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1062639827, now seen corresponding path program 24 times [2021-01-06 22:59:32,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:32,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939656911] [2021-01-06 22:59:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 22:59:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939656911] [2021-01-06 22:59:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771246124] [2021-01-06 22:59:33,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:33,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 22:59:33,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:33,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:33,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:33,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:33,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-01-06 22:59:33,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079461712] [2021-01-06 22:59:33,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:59:33,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:33,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:59:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:59:33,540 INFO L87 Difference]: Start difference. First operand 3474 states and 8422 transitions. Second operand 15 states. [2021-01-06 22:59:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:33,881 INFO L93 Difference]: Finished difference Result 5410 states and 12645 transitions. [2021-01-06 22:59:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 22:59:33,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2021-01-06 22:59:33,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:33,890 INFO L225 Difference]: With dead ends: 5410 [2021-01-06 22:59:33,890 INFO L226 Difference]: Without dead ends: 5410 [2021-01-06 22:59:33,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-01-06 22:59:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2021-01-06 22:59:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 3474. [2021-01-06 22:59:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2021-01-06 22:59:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 8422 transitions. [2021-01-06 22:59:33,993 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 8422 transitions. Word has length 67 [2021-01-06 22:59:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:33,994 INFO L481 AbstractCegarLoop]: Abstraction has 3474 states and 8422 transitions. [2021-01-06 22:59:33,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:59:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 8422 transitions. [2021-01-06 22:59:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 22:59:34,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:34,000 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:34,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-06 22:59:34,215 INFO L429 AbstractCegarLoop]: === Iteration 45 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1921687817, now seen corresponding path program 25 times [2021-01-06 22:59:34,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:34,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684797381] [2021-01-06 22:59:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 22:59:34,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684797381] [2021-01-06 22:59:34,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957373908] [2021-01-06 22:59:34,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:34,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:34,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:34,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:34,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-01-06 22:59:34,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162064124] [2021-01-06 22:59:34,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:59:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:34,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:59:34,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:59:34,669 INFO L87 Difference]: Start difference. First operand 3474 states and 8422 transitions. Second operand 15 states. [2021-01-06 22:59:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:34,988 INFO L93 Difference]: Finished difference Result 5523 states and 12803 transitions. [2021-01-06 22:59:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:34,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2021-01-06 22:59:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:34,998 INFO L225 Difference]: With dead ends: 5523 [2021-01-06 22:59:34,998 INFO L226 Difference]: Without dead ends: 5523 [2021-01-06 22:59:34,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2021-01-06 22:59:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 3490. [2021-01-06 22:59:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3490 states. [2021-01-06 22:59:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 8448 transitions. [2021-01-06 22:59:35,072 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 8448 transitions. Word has length 67 [2021-01-06 22:59:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 3490 states and 8448 transitions. [2021-01-06 22:59:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:59:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 8448 transitions. [2021-01-06 22:59:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 22:59:35,077 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:35,077 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:35,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:35,292 INFO L429 AbstractCegarLoop]: === Iteration 46 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2047465389, now seen corresponding path program 26 times [2021-01-06 22:59:35,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:35,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116862143] [2021-01-06 22:59:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 22:59:35,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116862143] [2021-01-06 22:59:35,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273852076] [2021-01-06 22:59:35,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:35,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 22:59:35,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:35,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 22:59:35,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 111 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 22:59:35,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:35,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-01-06 22:59:35,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369538590] [2021-01-06 22:59:35,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 22:59:35,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:35,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 22:59:35,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 22:59:35,758 INFO L87 Difference]: Start difference. First operand 3490 states and 8448 transitions. Second operand 15 states. [2021-01-06 22:59:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:36,109 INFO L93 Difference]: Finished difference Result 4778 states and 11052 transitions. [2021-01-06 22:59:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 22:59:36,110 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2021-01-06 22:59:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:36,118 INFO L225 Difference]: With dead ends: 4778 [2021-01-06 22:59:36,118 INFO L226 Difference]: Without dead ends: 4508 [2021-01-06 22:59:36,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-01-06 22:59:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2021-01-06 22:59:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 2996. [2021-01-06 22:59:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2996 states. [2021-01-06 22:59:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 7125 transitions. [2021-01-06 22:59:36,185 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 7125 transitions. Word has length 67 [2021-01-06 22:59:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:36,185 INFO L481 AbstractCegarLoop]: Abstraction has 2996 states and 7125 transitions. [2021-01-06 22:59:36,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 22:59:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 7125 transitions. [2021-01-06 22:59:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 22:59:36,191 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:36,191 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2021-01-06 22:59:36,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-06 22:59:36,407 INFO L429 AbstractCegarLoop]: === Iteration 47 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:36,408 INFO L82 PathProgramCache]: Analyzing trace with hash 725158190, now seen corresponding path program 9 times [2021-01-06 22:59:36,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:36,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648869814] [2021-01-06 22:59:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:59:36,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648869814] [2021-01-06 22:59:36,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936970003] [2021-01-06 22:59:36,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:37,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 22:59:37,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:37,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 22:59:37,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 22:59:37,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:37,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-06 22:59:37,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540746222] [2021-01-06 22:59:37,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 22:59:37,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:37,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 22:59:37,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-06 22:59:37,543 INFO L87 Difference]: Start difference. First operand 2996 states and 7125 transitions. Second operand 23 states. [2021-01-06 22:59:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:37,967 INFO L93 Difference]: Finished difference Result 3751 states and 8617 transitions. [2021-01-06 22:59:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 22:59:37,968 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 69 [2021-01-06 22:59:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:37,972 INFO L225 Difference]: With dead ends: 3751 [2021-01-06 22:59:37,972 INFO L226 Difference]: Without dead ends: 3751 [2021-01-06 22:59:37,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=728, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 22:59:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-01-06 22:59:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3087. [2021-01-06 22:59:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2021-01-06 22:59:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 7333 transitions. [2021-01-06 22:59:38,014 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 7333 transitions. Word has length 69 [2021-01-06 22:59:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:38,014 INFO L481 AbstractCegarLoop]: Abstraction has 3087 states and 7333 transitions. [2021-01-06 22:59:38,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 22:59:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 7333 transitions. [2021-01-06 22:59:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 22:59:38,018 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:38,018 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:38,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:38,219 INFO L429 AbstractCegarLoop]: === Iteration 48 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:38,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1505844517, now seen corresponding path program 27 times [2021-01-06 22:59:38,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:38,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800617213] [2021-01-06 22:59:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:38,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800617213] [2021-01-06 22:59:38,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639034589] [2021-01-06 22:59:38,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:39,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-06 22:59:39,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 22:59:39,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:39,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 22:59:39,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572809666] [2021-01-06 22:59:39,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 22:59:39,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 22:59:39,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 22:59:39,309 INFO L87 Difference]: Start difference. First operand 3087 states and 7333 transitions. Second operand 20 states. [2021-01-06 22:59:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:39,830 INFO L93 Difference]: Finished difference Result 4638 states and 10600 transitions. [2021-01-06 22:59:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 22:59:39,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 22:59:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:39,836 INFO L225 Difference]: With dead ends: 4638 [2021-01-06 22:59:39,836 INFO L226 Difference]: Without dead ends: 4638 [2021-01-06 22:59:39,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 22:59:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2021-01-06 22:59:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 3087. [2021-01-06 22:59:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2021-01-06 22:59:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 7333 transitions. [2021-01-06 22:59:39,878 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 7333 transitions. Word has length 73 [2021-01-06 22:59:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:39,878 INFO L481 AbstractCegarLoop]: Abstraction has 3087 states and 7333 transitions. [2021-01-06 22:59:39,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 22:59:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 7333 transitions. [2021-01-06 22:59:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 22:59:39,882 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:39,882 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:40,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-06 22:59:40,083 INFO L429 AbstractCegarLoop]: === Iteration 49 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1478483127, now seen corresponding path program 28 times [2021-01-06 22:59:40,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:40,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923908341] [2021-01-06 22:59:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:40,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923908341] [2021-01-06 22:59:40,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440400946] [2021-01-06 22:59:40,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:40,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 22:59:40,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 22:59:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:40,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:40,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 22:59:40,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250705362] [2021-01-06 22:59:40,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 22:59:40,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 22:59:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 22:59:40,651 INFO L87 Difference]: Start difference. First operand 3087 states and 7333 transitions. Second operand 20 states. [2021-01-06 22:59:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:41,155 INFO L93 Difference]: Finished difference Result 4791 states and 10829 transitions. [2021-01-06 22:59:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 22:59:41,157 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 22:59:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:41,164 INFO L225 Difference]: With dead ends: 4791 [2021-01-06 22:59:41,164 INFO L226 Difference]: Without dead ends: 4791 [2021-01-06 22:59:41,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 22:59:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2021-01-06 22:59:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3073. [2021-01-06 22:59:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2021-01-06 22:59:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 7294 transitions. [2021-01-06 22:59:41,222 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 7294 transitions. Word has length 73 [2021-01-06 22:59:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:41,222 INFO L481 AbstractCegarLoop]: Abstraction has 3073 states and 7294 transitions. [2021-01-06 22:59:41,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 22:59:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 7294 transitions. [2021-01-06 22:59:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 22:59:41,226 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:41,226 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:41,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-06 22:59:41,441 INFO L429 AbstractCegarLoop]: === Iteration 50 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:41,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1604260699, now seen corresponding path program 29 times [2021-01-06 22:59:41,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:41,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739945368] [2021-01-06 22:59:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:41,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739945368] [2021-01-06 22:59:41,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688435522] [2021-01-06 22:59:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:41,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-06 22:59:41,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:41,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 22:59:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 22:59:42,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 22:59:42,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 22:59:42,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971945966] [2021-01-06 22:59:42,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 22:59:42,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:42,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 22:59:42,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 22:59:42,111 INFO L87 Difference]: Start difference. First operand 3073 states and 7294 transitions. Second operand 20 states. [2021-01-06 22:59:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 22:59:42,575 INFO L93 Difference]: Finished difference Result 4749 states and 10652 transitions. [2021-01-06 22:59:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 22:59:42,576 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 22:59:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 22:59:42,581 INFO L225 Difference]: With dead ends: 4749 [2021-01-06 22:59:42,581 INFO L226 Difference]: Without dead ends: 4749 [2021-01-06 22:59:42,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 22:59:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2021-01-06 22:59:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 3073. [2021-01-06 22:59:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2021-01-06 22:59:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 7294 transitions. [2021-01-06 22:59:42,633 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 7294 transitions. Word has length 73 [2021-01-06 22:59:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 22:59:42,633 INFO L481 AbstractCegarLoop]: Abstraction has 3073 states and 7294 transitions. [2021-01-06 22:59:42,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 22:59:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 7294 transitions. [2021-01-06 22:59:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 22:59:42,637 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 22:59:42,637 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 22:59:42,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-06 22:59:42,838 INFO L429 AbstractCegarLoop]: === Iteration 51 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 22:59:42,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 22:59:42,839 INFO L82 PathProgramCache]: Analyzing trace with hash 136891564, now seen corresponding path program 6 times [2021-01-06 22:59:42,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 22:59:42,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721621923] [2021-01-06 22:59:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 22:59:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 22:59:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 22:59:44,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721621923] [2021-01-06 22:59:44,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100251921] [2021-01-06 22:59:44,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 22:59:44,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-06 22:59:44,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 22:59:44,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 94 conjunts are in the unsatisfiable core [2021-01-06 22:59:44,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 22:59:44,992 INFO L382 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 [2021-01-06 22:59:44,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:45,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:45,010 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:45,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:51 [2021-01-06 22:59:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:45,604 INFO L382 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 71 treesize of output 43 [2021-01-06 22:59:45,606 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:45,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:45,631 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:45,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:59:46,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:46,215 INFO L382 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 71 treesize of output 43 [2021-01-06 22:59:46,217 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:46,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:46,242 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:46,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:59:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 22:59:46,898 INFO L382 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 71 treesize of output 43 [2021-01-06 22:59:46,900 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 22:59:46,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 22:59:46,927 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 22:59:46,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:56 [2021-01-06 22:59:48,508 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 22:59:48,522 INFO L382 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 80 treesize of output 32 [2021-01-06 22:59:48,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 22:59:48,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 22:59:48,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-01-06 22:59:48,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456145232] [2021-01-06 22:59:48,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-06 22:59:48,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 22:59:48,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-06 22:59:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3617, Unknown=0, NotChecked=0, Total=3782 [2021-01-06 22:59:48,530 INFO L87 Difference]: Start difference. First operand 3073 states and 7294 transitions. Second operand 33 states. [2021-01-06 22:59:48,824 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-01-06 22:59:49,862 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-01-06 22:59:50,449 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2021-01-06 22:59:50,866 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-01-06 22:59:51,327 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-01-06 22:59:51,945 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-01-06 22:59:52,425 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-01-06 22:59:52,929 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2021-01-06 22:59:53,298 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-01-06 22:59:54,125 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-01-06 22:59:54,508 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-01-06 22:59:54,824 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-01-06 22:59:55,216 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-01-06 22:59:55,792 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2021-01-06 22:59:56,243 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-01-06 22:59:56,639 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-01-06 22:59:56,985 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-01-06 22:59:57,341 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2021-01-06 22:59:57,936 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-01-06 22:59:58,365 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-01-06 22:59:58,910 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2021-01-06 22:59:59,399 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-01-06 22:59:59,804 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-01-06 23:00:00,253 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-01-06 23:00:00,584 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-01-06 23:00:00,878 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-01-06 23:00:01,144 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-01-06 23:00:01,435 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-01-06 23:00:01,857 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-01-06 23:00:02,163 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-01-06 23:00:02,559 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2021-01-06 23:00:02,911 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-01-06 23:00:03,422 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 23:00:03,770 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2021-01-06 23:00:04,112 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-06 23:00:04,448 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-01-06 23:00:04,830 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-01-06 23:00:05,217 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-01-06 23:00:05,558 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 23:00:06,068 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-01-06 23:00:06,372 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-01-06 23:00:06,658 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-01-06 23:00:06,928 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 23:00:07,400 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-06 23:00:07,716 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 23:00:08,077 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-06 23:00:08,385 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-01-06 23:00:08,822 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 23:00:09,091 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-01-06 23:00:09,365 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-01-06 23:00:09,656 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2021-01-06 23:00:09,945 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-06 23:00:10,263 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-01-06 23:00:10,784 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-01-06 23:00:12,895 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-01-06 23:00:13,165 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 23:00:13,455 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-01-06 23:00:13,911 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-06 23:00:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:14,302 INFO L93 Difference]: Finished difference Result 8231 states and 18560 transitions. [2021-01-06 23:00:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-01-06 23:00:14,304 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 73 [2021-01-06 23:00:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:14,314 INFO L225 Difference]: With dead ends: 8231 [2021-01-06 23:00:14,314 INFO L226 Difference]: Without dead ends: 8096 [2021-01-06 23:00:14,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5763 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=2226, Invalid=18654, Unknown=0, NotChecked=0, Total=20880 [2021-01-06 23:00:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-01-06 23:00:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 3789. [2021-01-06 23:00:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3789 states. [2021-01-06 23:00:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 9114 transitions. [2021-01-06 23:00:14,396 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 9114 transitions. Word has length 73 [2021-01-06 23:00:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:14,396 INFO L481 AbstractCegarLoop]: Abstraction has 3789 states and 9114 transitions. [2021-01-06 23:00:14,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-06 23:00:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 9114 transitions. [2021-01-06 23:00:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 23:00:14,400 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:14,400 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:14,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-01-06 23:00:14,601 INFO L429 AbstractCegarLoop]: === Iteration 52 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash 956834761, now seen corresponding path program 30 times [2021-01-06 23:00:14,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:14,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104298133] [2021-01-06 23:00:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:14,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104298133] [2021-01-06 23:00:14,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406764780] [2021-01-06 23:00:14,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:15,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-06 23:00:15,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:15,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:15,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:15,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:15,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 23:00:15,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694402144] [2021-01-06 23:00:15,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 23:00:15,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 23:00:15,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 23:00:15,725 INFO L87 Difference]: Start difference. First operand 3789 states and 9114 transitions. Second operand 20 states. [2021-01-06 23:00:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:16,266 INFO L93 Difference]: Finished difference Result 5722 states and 13057 transitions. [2021-01-06 23:00:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 23:00:16,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 23:00:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:16,275 INFO L225 Difference]: With dead ends: 5722 [2021-01-06 23:00:16,275 INFO L226 Difference]: Without dead ends: 5722 [2021-01-06 23:00:16,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2021-01-06 23:00:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2021-01-06 23:00:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 3937. [2021-01-06 23:00:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2021-01-06 23:00:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 9534 transitions. [2021-01-06 23:00:16,329 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 9534 transitions. Word has length 73 [2021-01-06 23:00:16,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:16,329 INFO L481 AbstractCegarLoop]: Abstraction has 3937 states and 9534 transitions. [2021-01-06 23:00:16,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 23:00:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 9534 transitions. [2021-01-06 23:00:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 23:00:16,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:16,334 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:16,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:16,545 INFO L429 AbstractCegarLoop]: === Iteration 53 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:16,546 INFO L82 PathProgramCache]: Analyzing trace with hash -489726939, now seen corresponding path program 31 times [2021-01-06 23:00:16,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:16,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970615132] [2021-01-06 23:00:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:16,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970615132] [2021-01-06 23:00:16,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689636579] [2021-01-06 23:00:16,886 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:17,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:17,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:17,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:17,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 23:00:17,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083497858] [2021-01-06 23:00:17,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 23:00:17,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 23:00:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 23:00:17,238 INFO L87 Difference]: Start difference. First operand 3937 states and 9534 transitions. Second operand 20 states. [2021-01-06 23:00:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:17,770 INFO L93 Difference]: Finished difference Result 5686 states and 12995 transitions. [2021-01-06 23:00:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 23:00:17,771 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 23:00:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:17,779 INFO L225 Difference]: With dead ends: 5686 [2021-01-06 23:00:17,779 INFO L226 Difference]: Without dead ends: 5686 [2021-01-06 23:00:17,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-06 23:00:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-01-06 23:00:17,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 3965. [2021-01-06 23:00:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3965 states. [2021-01-06 23:00:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 9610 transitions. [2021-01-06 23:00:17,837 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 9610 transitions. Word has length 73 [2021-01-06 23:00:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:17,837 INFO L481 AbstractCegarLoop]: Abstraction has 3965 states and 9610 transitions. [2021-01-06 23:00:17,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 23:00:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 9610 transitions. [2021-01-06 23:00:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 23:00:17,841 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:17,841 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:18,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-01-06 23:00:18,042 INFO L429 AbstractCegarLoop]: === Iteration 54 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:18,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:18,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1847245751, now seen corresponding path program 32 times [2021-01-06 23:00:18,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:18,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051401421] [2021-01-06 23:00:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:18,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051401421] [2021-01-06 23:00:18,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842134030] [2021-01-06 23:00:18,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:18,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 23:00:18,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:18,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:18,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:18,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 23:00:18,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653654907] [2021-01-06 23:00:18,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 23:00:18,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 23:00:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 23:00:18,754 INFO L87 Difference]: Start difference. First operand 3965 states and 9610 transitions. Second operand 20 states. [2021-01-06 23:00:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:19,239 INFO L93 Difference]: Finished difference Result 5194 states and 12051 transitions. [2021-01-06 23:00:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 23:00:19,240 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 23:00:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:19,246 INFO L225 Difference]: With dead ends: 5194 [2021-01-06 23:00:19,246 INFO L226 Difference]: Without dead ends: 5194 [2021-01-06 23:00:19,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2021-01-06 23:00:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-01-06 23:00:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 3993. [2021-01-06 23:00:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3993 states. [2021-01-06 23:00:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 9686 transitions. [2021-01-06 23:00:19,304 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 9686 transitions. Word has length 73 [2021-01-06 23:00:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:19,304 INFO L481 AbstractCegarLoop]: Abstraction has 3993 states and 9686 transitions. [2021-01-06 23:00:19,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 23:00:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 9686 transitions. [2021-01-06 23:00:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 23:00:19,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:19,307 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:19,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:19,508 INFO L429 AbstractCegarLoop]: === Iteration 55 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:19,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1568975781, now seen corresponding path program 33 times [2021-01-06 23:00:19,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:19,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679004536] [2021-01-06 23:00:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 211 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 23:00:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679004536] [2021-01-06 23:00:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088610441] [2021-01-06 23:00:19,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:20,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-06 23:00:20,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:20,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:20,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 205 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:20,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:20,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 19 [2021-01-06 23:00:20,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159880698] [2021-01-06 23:00:20,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 23:00:20,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 23:00:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-01-06 23:00:20,455 INFO L87 Difference]: Start difference. First operand 3993 states and 9686 transitions. Second operand 20 states. [2021-01-06 23:00:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:20,968 INFO L93 Difference]: Finished difference Result 4911 states and 11492 transitions. [2021-01-06 23:00:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 23:00:20,970 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2021-01-06 23:00:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:20,977 INFO L225 Difference]: With dead ends: 4911 [2021-01-06 23:00:20,977 INFO L226 Difference]: Without dead ends: 4911 [2021-01-06 23:00:20,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-01-06 23:00:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2021-01-06 23:00:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4007. [2021-01-06 23:00:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4007 states. [2021-01-06 23:00:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 9725 transitions. [2021-01-06 23:00:21,029 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 9725 transitions. Word has length 73 [2021-01-06 23:00:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:21,030 INFO L481 AbstractCegarLoop]: Abstraction has 4007 states and 9725 transitions. [2021-01-06 23:00:21,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 23:00:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 9725 transitions. [2021-01-06 23:00:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:21,033 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:21,033 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:21,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-01-06 23:00:21,234 INFO L429 AbstractCegarLoop]: === Iteration 56 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash 737503700, now seen corresponding path program 34 times [2021-01-06 23:00:21,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:21,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55624390] [2021-01-06 23:00:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:21,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55624390] [2021-01-06 23:00:21,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127289980] [2021-01-06 23:00:21,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:21,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 23:00:21,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:21,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:21,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:21,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:21,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:21,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895360296] [2021-01-06 23:00:21,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:21,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:21,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:21,854 INFO L87 Difference]: Start difference. First operand 4007 states and 9725 transitions. Second operand 17 states. [2021-01-06 23:00:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:22,348 INFO L93 Difference]: Finished difference Result 5816 states and 13454 transitions. [2021-01-06 23:00:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 23:00:22,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:22,358 INFO L225 Difference]: With dead ends: 5816 [2021-01-06 23:00:22,358 INFO L226 Difference]: Without dead ends: 5816 [2021-01-06 23:00:22,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2021-01-06 23:00:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5816 states. [2021-01-06 23:00:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5816 to 4251. [2021-01-06 23:00:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2021-01-06 23:00:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 10403 transitions. [2021-01-06 23:00:22,430 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 10403 transitions. Word has length 74 [2021-01-06 23:00:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:22,430 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 10403 transitions. [2021-01-06 23:00:22,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 10403 transitions. [2021-01-06 23:00:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:22,435 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:22,435 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:22,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-01-06 23:00:22,650 INFO L429 AbstractCegarLoop]: === Iteration 57 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1156236040, now seen corresponding path program 35 times [2021-01-06 23:00:22,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:22,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037295931] [2021-01-06 23:00:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:22,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037295931] [2021-01-06 23:00:22,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654861238] [2021-01-06 23:00:22,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:23,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-06 23:00:23,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:23,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:23,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:23,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:23,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993779482] [2021-01-06 23:00:23,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:23,363 INFO L87 Difference]: Start difference. First operand 4251 states and 10403 transitions. Second operand 17 states. [2021-01-06 23:00:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:23,824 INFO L93 Difference]: Finished difference Result 7436 states and 17523 transitions. [2021-01-06 23:00:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 23:00:23,827 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:23,838 INFO L225 Difference]: With dead ends: 7436 [2021-01-06 23:00:23,838 INFO L226 Difference]: Without dead ends: 7436 [2021-01-06 23:00:23,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2021-01-06 23:00:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2021-01-06 23:00:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 4251. [2021-01-06 23:00:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2021-01-06 23:00:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 10403 transitions. [2021-01-06 23:00:23,952 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 10403 transitions. Word has length 74 [2021-01-06 23:00:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:23,953 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 10403 transitions. [2021-01-06 23:00:23,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 10403 transitions. [2021-01-06 23:00:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:23,955 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:23,956 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:24,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:24,157 INFO L429 AbstractCegarLoop]: === Iteration 58 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:24,158 INFO L82 PathProgramCache]: Analyzing trace with hash 154403612, now seen corresponding path program 36 times [2021-01-06 23:00:24,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:24,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494147926] [2021-01-06 23:00:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494147926] [2021-01-06 23:00:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141354680] [2021-01-06 23:00:24,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:24,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-06 23:00:24,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:24,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:24,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130376561] [2021-01-06 23:00:24,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:24,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:24,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:24,968 INFO L87 Difference]: Start difference. First operand 4251 states and 10403 transitions. Second operand 17 states. [2021-01-06 23:00:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:25,437 INFO L93 Difference]: Finished difference Result 6083 states and 14158 transitions. [2021-01-06 23:00:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 23:00:25,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:25,447 INFO L225 Difference]: With dead ends: 6083 [2021-01-06 23:00:25,447 INFO L226 Difference]: Without dead ends: 6083 [2021-01-06 23:00:25,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-01-06 23:00:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2021-01-06 23:00:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 4221. [2021-01-06 23:00:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2021-01-06 23:00:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 10318 transitions. [2021-01-06 23:00:25,525 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 10318 transitions. Word has length 74 [2021-01-06 23:00:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:25,525 INFO L481 AbstractCegarLoop]: Abstraction has 4221 states and 10318 transitions. [2021-01-06 23:00:25,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 10318 transitions. [2021-01-06 23:00:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:25,529 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:25,529 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:25,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-01-06 23:00:25,744 INFO L429 AbstractCegarLoop]: === Iteration 59 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -289646252, now seen corresponding path program 37 times [2021-01-06 23:00:25,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:25,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295432594] [2021-01-06 23:00:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:25,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295432594] [2021-01-06 23:00:25,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760421876] [2021-01-06 23:00:25,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:26,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:26,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:26,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:26,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917594138] [2021-01-06 23:00:26,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:26,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:26,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:26,350 INFO L87 Difference]: Start difference. First operand 4221 states and 10318 transitions. Second operand 17 states. [2021-01-06 23:00:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:26,812 INFO L93 Difference]: Finished difference Result 6834 states and 16092 transitions. [2021-01-06 23:00:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 23:00:26,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:26,824 INFO L225 Difference]: With dead ends: 6834 [2021-01-06 23:00:26,824 INFO L226 Difference]: Without dead ends: 6834 [2021-01-06 23:00:26,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-06 23:00:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2021-01-06 23:00:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 4235. [2021-01-06 23:00:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4235 states. [2021-01-06 23:00:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 10357 transitions. [2021-01-06 23:00:26,918 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 10357 transitions. Word has length 74 [2021-01-06 23:00:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:26,918 INFO L481 AbstractCegarLoop]: Abstraction has 4235 states and 10357 transitions. [2021-01-06 23:00:26,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 10357 transitions. [2021-01-06 23:00:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:26,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:26,922 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:27,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-01-06 23:00:27,123 INFO L429 AbstractCegarLoop]: === Iteration 60 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:27,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1020993400, now seen corresponding path program 38 times [2021-01-06 23:00:27,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:27,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625192843] [2021-01-06 23:00:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625192843] [2021-01-06 23:00:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965693635] [2021-01-06 23:00:27,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:27,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 23:00:27,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:27,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:27,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:27,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:27,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250811334] [2021-01-06 23:00:27,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:27,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:27,814 INFO L87 Difference]: Start difference. First operand 4235 states and 10357 transitions. Second operand 17 states. [2021-01-06 23:00:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:28,246 INFO L93 Difference]: Finished difference Result 7015 states and 16411 transitions. [2021-01-06 23:00:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 23:00:28,248 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:28,255 INFO L225 Difference]: With dead ends: 7015 [2021-01-06 23:00:28,255 INFO L226 Difference]: Without dead ends: 7015 [2021-01-06 23:00:28,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2021-01-06 23:00:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7015 states. [2021-01-06 23:00:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7015 to 4221. [2021-01-06 23:00:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2021-01-06 23:00:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 10318 transitions. [2021-01-06 23:00:28,321 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 10318 transitions. Word has length 74 [2021-01-06 23:00:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:28,321 INFO L481 AbstractCegarLoop]: Abstraction has 4221 states and 10318 transitions. [2021-01-06 23:00:28,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:28,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 10318 transitions. [2021-01-06 23:00:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:28,324 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:28,324 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:28,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-01-06 23:00:28,525 INFO L429 AbstractCegarLoop]: === Iteration 61 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash 895215828, now seen corresponding path program 39 times [2021-01-06 23:00:28,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:28,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698084696] [2021-01-06 23:00:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:28,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698084696] [2021-01-06 23:00:28,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292676158] [2021-01-06 23:00:28,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:29,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-06 23:00:29,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:29,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:29,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:29,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:29,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 23:00:29,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562436459] [2021-01-06 23:00:29,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:29,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:29,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:29,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:29,371 INFO L87 Difference]: Start difference. First operand 4221 states and 10318 transitions. Second operand 17 states. [2021-01-06 23:00:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:29,791 INFO L93 Difference]: Finished difference Result 6230 states and 14446 transitions. [2021-01-06 23:00:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 23:00:29,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:29,799 INFO L225 Difference]: With dead ends: 6230 [2021-01-06 23:00:29,799 INFO L226 Difference]: Without dead ends: 6230 [2021-01-06 23:00:29,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-01-06 23:00:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-01-06 23:00:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 4453. [2021-01-06 23:00:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2021-01-06 23:00:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 10964 transitions. [2021-01-06 23:00:29,863 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 10964 transitions. Word has length 74 [2021-01-06 23:00:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:29,863 INFO L481 AbstractCegarLoop]: Abstraction has 4453 states and 10964 transitions. [2021-01-06 23:00:29,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 10964 transitions. [2021-01-06 23:00:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:29,865 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:29,866 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:30,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:30,066 INFO L429 AbstractCegarLoop]: === Iteration 62 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:30,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1760961160, now seen corresponding path program 40 times [2021-01-06 23:00:30,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:30,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660642316] [2021-01-06 23:00:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 23:00:30,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660642316] [2021-01-06 23:00:30,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116655663] [2021-01-06 23:00:30,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:30,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 23:00:30,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:30,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:30,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:30,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:30,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-01-06 23:00:30,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663009626] [2021-01-06 23:00:30,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:30,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:30,670 INFO L87 Difference]: Start difference. First operand 4453 states and 10964 transitions. Second operand 17 states. [2021-01-06 23:00:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:31,147 INFO L93 Difference]: Finished difference Result 6722 states and 15858 transitions. [2021-01-06 23:00:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 23:00:31,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:31,156 INFO L225 Difference]: With dead ends: 6722 [2021-01-06 23:00:31,156 INFO L226 Difference]: Without dead ends: 6722 [2021-01-06 23:00:31,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2021-01-06 23:00:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2021-01-06 23:00:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 4439. [2021-01-06 23:00:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4439 states. [2021-01-06 23:00:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 10925 transitions. [2021-01-06 23:00:31,213 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 10925 transitions. Word has length 74 [2021-01-06 23:00:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:31,214 INFO L481 AbstractCegarLoop]: Abstraction has 4439 states and 10925 transitions. [2021-01-06 23:00:31,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 10925 transitions. [2021-01-06 23:00:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:31,216 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:31,216 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:31,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:31,417 INFO L429 AbstractCegarLoop]: === Iteration 63 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash -450321508, now seen corresponding path program 41 times [2021-01-06 23:00:31,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:31,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153675953] [2021-01-06 23:00:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 23:00:31,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153675953] [2021-01-06 23:00:31,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070011790] [2021-01-06 23:00:31,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:31,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-06 23:00:31,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:31,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:31,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:32,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:32,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-01-06 23:00:32,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79878543] [2021-01-06 23:00:32,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:32,052 INFO L87 Difference]: Start difference. First operand 4439 states and 10925 transitions. Second operand 17 states. [2021-01-06 23:00:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:32,496 INFO L93 Difference]: Finished difference Result 6880 states and 16122 transitions. [2021-01-06 23:00:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 23:00:32,498 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:32,505 INFO L225 Difference]: With dead ends: 6880 [2021-01-06 23:00:32,505 INFO L226 Difference]: Without dead ends: 6880 [2021-01-06 23:00:32,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-01-06 23:00:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2021-01-06 23:00:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 4425. [2021-01-06 23:00:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4425 states. [2021-01-06 23:00:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 10886 transitions. [2021-01-06 23:00:32,563 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 10886 transitions. Word has length 74 [2021-01-06 23:00:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:32,563 INFO L481 AbstractCegarLoop]: Abstraction has 4425 states and 10886 transitions. [2021-01-06 23:00:32,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 10886 transitions. [2021-01-06 23:00:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:32,566 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:32,566 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:32,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:32,767 INFO L429 AbstractCegarLoop]: === Iteration 64 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash -576099080, now seen corresponding path program 42 times [2021-01-06 23:00:32,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:32,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611988892] [2021-01-06 23:00:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 23:00:33,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611988892] [2021-01-06 23:00:33,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551595368] [2021-01-06 23:00:33,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:33,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-06 23:00:33,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:33,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 23:00:33,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 23:00:33,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:33,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 21 [2021-01-06 23:00:33,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396270922] [2021-01-06 23:00:33,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:33,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:33,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:33,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:33,874 INFO L87 Difference]: Start difference. First operand 4425 states and 10886 transitions. Second operand 22 states. [2021-01-06 23:00:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:34,715 INFO L93 Difference]: Finished difference Result 6962 states and 16164 transitions. [2021-01-06 23:00:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 23:00:34,716 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 74 [2021-01-06 23:00:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:34,725 INFO L225 Difference]: With dead ends: 6962 [2021-01-06 23:00:34,726 INFO L226 Difference]: Without dead ends: 6962 [2021-01-06 23:00:34,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 23:00:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2021-01-06 23:00:34,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 4633. [2021-01-06 23:00:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4633 states. [2021-01-06 23:00:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 11434 transitions. [2021-01-06 23:00:34,795 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 11434 transitions. Word has length 74 [2021-01-06 23:00:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:34,796 INFO L481 AbstractCegarLoop]: Abstraction has 4633 states and 11434 transitions. [2021-01-06 23:00:34,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 11434 transitions. [2021-01-06 23:00:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 23:00:34,800 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:34,800 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:35,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:35,008 INFO L429 AbstractCegarLoop]: === Iteration 65 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1984996380, now seen corresponding path program 43 times [2021-01-06 23:00:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:35,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726786363] [2021-01-06 23:00:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 23:00:35,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726786363] [2021-01-06 23:00:35,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362866470] [2021-01-06 23:00:35,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:35,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 23:00:35,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 7 proven. 155 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:35,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:35,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-01-06 23:00:35,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174776568] [2021-01-06 23:00:35,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 23:00:35,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:35,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 23:00:35,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-06 23:00:35,694 INFO L87 Difference]: Start difference. First operand 4633 states and 11434 transitions. Second operand 17 states. [2021-01-06 23:00:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:36,149 INFO L93 Difference]: Finished difference Result 5872 states and 13952 transitions. [2021-01-06 23:00:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 23:00:36,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2021-01-06 23:00:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:36,159 INFO L225 Difference]: With dead ends: 5872 [2021-01-06 23:00:36,159 INFO L226 Difference]: Without dead ends: 5872 [2021-01-06 23:00:36,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-01-06 23:00:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2021-01-06 23:00:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 4719. [2021-01-06 23:00:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4719 states. [2021-01-06 23:00:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 11635 transitions. [2021-01-06 23:00:36,225 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 11635 transitions. Word has length 74 [2021-01-06 23:00:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:36,225 INFO L481 AbstractCegarLoop]: Abstraction has 4719 states and 11635 transitions. [2021-01-06 23:00:36,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 23:00:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 11635 transitions. [2021-01-06 23:00:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 23:00:36,228 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:36,229 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-01-06 23:00:36,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-01-06 23:00:36,430 INFO L429 AbstractCegarLoop]: === Iteration 66 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:36,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1481431327, now seen corresponding path program 10 times [2021-01-06 23:00:36,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:36,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624409119] [2021-01-06 23:00:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 10 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:00:37,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624409119] [2021-01-06 23:00:37,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314396549] [2021-01-06 23:00:37,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:37,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 23:00:37,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:37,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:37,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 10 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:00:37,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:37,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-01-06 23:00:37,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682289409] [2021-01-06 23:00:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-06 23:00:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-06 23:00:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-06 23:00:37,386 INFO L87 Difference]: Start difference. First operand 4719 states and 11635 transitions. Second operand 25 states. [2021-01-06 23:00:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:38,006 INFO L93 Difference]: Finished difference Result 5600 states and 13366 transitions. [2021-01-06 23:00:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 23:00:38,007 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2021-01-06 23:00:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:38,016 INFO L225 Difference]: With dead ends: 5600 [2021-01-06 23:00:38,016 INFO L226 Difference]: Without dead ends: 5600 [2021-01-06 23:00:38,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=872, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 23:00:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-01-06 23:00:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 4810. [2021-01-06 23:00:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4810 states. [2021-01-06 23:00:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 11843 transitions. [2021-01-06 23:00:38,116 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 11843 transitions. Word has length 76 [2021-01-06 23:00:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:38,116 INFO L481 AbstractCegarLoop]: Abstraction has 4810 states and 11843 transitions. [2021-01-06 23:00:38,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-06 23:00:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 11843 transitions. [2021-01-06 23:00:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:38,120 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:38,120 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:38,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:38,324 INFO L429 AbstractCegarLoop]: === Iteration 67 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2111502566, now seen corresponding path program 44 times [2021-01-06 23:00:38,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:38,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37105769] [2021-01-06 23:00:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:38,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37105769] [2021-01-06 23:00:38,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356015318] [2021-01-06 23:00:38,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:38,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 23:00:38,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:38,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:38,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:39,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:39,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:39,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212449530] [2021-01-06 23:00:39,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:39,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:39,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:39,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:39,143 INFO L87 Difference]: Start difference. First operand 4810 states and 11843 transitions. Second operand 22 states. [2021-01-06 23:00:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:39,903 INFO L93 Difference]: Finished difference Result 6821 states and 16129 transitions. [2021-01-06 23:00:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 23:00:39,905 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:39,925 INFO L225 Difference]: With dead ends: 6821 [2021-01-06 23:00:39,926 INFO L226 Difference]: Without dead ends: 6821 [2021-01-06 23:00:39,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 23:00:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-01-06 23:00:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 4810. [2021-01-06 23:00:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4810 states. [2021-01-06 23:00:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 11843 transitions. [2021-01-06 23:00:40,045 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 11843 transitions. Word has length 80 [2021-01-06 23:00:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:40,045 INFO L481 AbstractCegarLoop]: Abstraction has 4810 states and 11843 transitions. [2021-01-06 23:00:40,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 11843 transitions. [2021-01-06 23:00:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:40,052 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:40,053 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:40,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-01-06 23:00:40,268 INFO L429 AbstractCegarLoop]: === Iteration 68 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash -872825078, now seen corresponding path program 45 times [2021-01-06 23:00:40,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:40,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517110163] [2021-01-06 23:00:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517110163] [2021-01-06 23:00:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810634474] [2021-01-06 23:00:40,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:41,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 23:00:41,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:41,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:41,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:41,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:41,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565780488] [2021-01-06 23:00:41,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:41,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:41,555 INFO L87 Difference]: Start difference. First operand 4810 states and 11843 transitions. Second operand 22 states. [2021-01-06 23:00:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:42,262 INFO L93 Difference]: Finished difference Result 7114 states and 16662 transitions. [2021-01-06 23:00:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 23:00:42,264 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:42,275 INFO L225 Difference]: With dead ends: 7114 [2021-01-06 23:00:42,275 INFO L226 Difference]: Without dead ends: 7114 [2021-01-06 23:00:42,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 23:00:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-01-06 23:00:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4796. [2021-01-06 23:00:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4796 states. [2021-01-06 23:00:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 11804 transitions. [2021-01-06 23:00:42,349 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 11804 transitions. Word has length 80 [2021-01-06 23:00:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:42,349 INFO L481 AbstractCegarLoop]: Abstraction has 4796 states and 11804 transitions. [2021-01-06 23:00:42,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 11804 transitions. [2021-01-06 23:00:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:42,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:42,360 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:42,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:42,576 INFO L429 AbstractCegarLoop]: === Iteration 69 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash -998602650, now seen corresponding path program 46 times [2021-01-06 23:00:42,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:42,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304063585] [2021-01-06 23:00:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:42,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304063585] [2021-01-06 23:00:42,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288544077] [2021-01-06 23:00:42,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:43,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 23:00:43,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:43,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:43,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:43,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:43,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:43,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057719502] [2021-01-06 23:00:43,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:43,321 INFO L87 Difference]: Start difference. First operand 4796 states and 11804 transitions. Second operand 22 states. [2021-01-06 23:00:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:43,996 INFO L93 Difference]: Finished difference Result 7154 states and 16650 transitions. [2021-01-06 23:00:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 23:00:43,997 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:44,007 INFO L225 Difference]: With dead ends: 7154 [2021-01-06 23:00:44,007 INFO L226 Difference]: Without dead ends: 7154 [2021-01-06 23:00:44,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=341, Invalid=991, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 23:00:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2021-01-06 23:00:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 4782. [2021-01-06 23:00:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4782 states. [2021-01-06 23:00:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 11765 transitions. [2021-01-06 23:00:44,111 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 11765 transitions. Word has length 80 [2021-01-06 23:00:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:44,111 INFO L481 AbstractCegarLoop]: Abstraction has 4782 states and 11765 transitions. [2021-01-06 23:00:44,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 11765 transitions. [2021-01-06 23:00:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:44,115 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:44,115 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:44,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-01-06 23:00:44,316 INFO L429 AbstractCegarLoop]: === Iteration 70 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1562492810, now seen corresponding path program 47 times [2021-01-06 23:00:44,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:44,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445633374] [2021-01-06 23:00:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:44,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445633374] [2021-01-06 23:00:44,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448406662] [2021-01-06 23:00:44,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:45,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-06 23:00:45,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:45,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:45,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:45,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:45,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:45,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75418288] [2021-01-06 23:00:45,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:45,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:45,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:45,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:45,584 INFO L87 Difference]: Start difference. First operand 4782 states and 11765 transitions. Second operand 22 states. [2021-01-06 23:00:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:46,289 INFO L93 Difference]: Finished difference Result 6961 states and 16106 transitions. [2021-01-06 23:00:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 23:00:46,291 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:46,301 INFO L225 Difference]: With dead ends: 6961 [2021-01-06 23:00:46,302 INFO L226 Difference]: Without dead ends: 6961 [2021-01-06 23:00:46,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 23:00:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-01-06 23:00:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 4768. [2021-01-06 23:00:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4768 states. [2021-01-06 23:00:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 11726 transitions. [2021-01-06 23:00:46,374 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 11726 transitions. Word has length 80 [2021-01-06 23:00:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:46,375 INFO L481 AbstractCegarLoop]: Abstraction has 4768 states and 11726 transitions. [2021-01-06 23:00:46,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 11726 transitions. [2021-01-06 23:00:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:46,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:46,378 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:46,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:46,594 INFO L429 AbstractCegarLoop]: === Iteration 71 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash 115931110, now seen corresponding path program 48 times [2021-01-06 23:00:46,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:46,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238008130] [2021-01-06 23:00:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:47,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238008130] [2021-01-06 23:00:47,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61816101] [2021-01-06 23:00:47,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:47,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-06 23:00:47,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:47,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:47,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:47,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:47,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:47,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230350817] [2021-01-06 23:00:47,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:47,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:47,911 INFO L87 Difference]: Start difference. First operand 4768 states and 11726 transitions. Second operand 22 states. [2021-01-06 23:00:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:48,560 INFO L93 Difference]: Finished difference Result 6795 states and 15742 transitions. [2021-01-06 23:00:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 23:00:48,561 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:48,571 INFO L225 Difference]: With dead ends: 6795 [2021-01-06 23:00:48,571 INFO L226 Difference]: Without dead ends: 6795 [2021-01-06 23:00:48,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=871, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 23:00:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6795 states. [2021-01-06 23:00:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6795 to 4782. [2021-01-06 23:00:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4782 states. [2021-01-06 23:00:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 11765 transitions. [2021-01-06 23:00:48,647 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 11765 transitions. Word has length 80 [2021-01-06 23:00:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:48,647 INFO L481 AbstractCegarLoop]: Abstraction has 4782 states and 11765 transitions. [2021-01-06 23:00:48,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 11765 transitions. [2021-01-06 23:00:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:48,651 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:48,652 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:48,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:48,853 INFO L429 AbstractCegarLoop]: === Iteration 72 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1241587702, now seen corresponding path program 49 times [2021-01-06 23:00:48,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:48,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713879549] [2021-01-06 23:00:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:49,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713879549] [2021-01-06 23:00:49,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6709066] [2021-01-06 23:00:49,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:49,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:49,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:49,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:49,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423977665] [2021-01-06 23:00:49,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:49,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:49,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:49,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:49,847 INFO L87 Difference]: Start difference. First operand 4782 states and 11765 transitions. Second operand 22 states. [2021-01-06 23:00:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:50,518 INFO L93 Difference]: Finished difference Result 6743 states and 15636 transitions. [2021-01-06 23:00:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 23:00:50,519 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:50,528 INFO L225 Difference]: With dead ends: 6743 [2021-01-06 23:00:50,529 INFO L226 Difference]: Without dead ends: 6743 [2021-01-06 23:00:50,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 23:00:50,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2021-01-06 23:00:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 4810. [2021-01-06 23:00:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4810 states. [2021-01-06 23:00:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 11841 transitions. [2021-01-06 23:00:50,656 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 11841 transitions. Word has length 80 [2021-01-06 23:00:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:50,656 INFO L481 AbstractCegarLoop]: Abstraction has 4810 states and 11841 transitions. [2021-01-06 23:00:50,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 11841 transitions. [2021-01-06 23:00:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:50,660 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:50,661 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:50,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-01-06 23:00:50,862 INFO L429 AbstractCegarLoop]: === Iteration 73 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2120333466, now seen corresponding path program 50 times [2021-01-06 23:00:50,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:50,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658024657] [2021-01-06 23:00:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:51,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658024657] [2021-01-06 23:00:51,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171349610] [2021-01-06 23:00:51,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:51,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 23:00:51,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:51,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:51,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:51,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:51,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 23:00:51,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657717976] [2021-01-06 23:00:51,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:51,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:51,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:51,640 INFO L87 Difference]: Start difference. First operand 4810 states and 11841 transitions. Second operand 22 states. [2021-01-06 23:00:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:52,234 INFO L93 Difference]: Finished difference Result 6214 states and 14634 transitions. [2021-01-06 23:00:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 23:00:52,235 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:52,243 INFO L225 Difference]: With dead ends: 6214 [2021-01-06 23:00:52,243 INFO L226 Difference]: Without dead ends: 6214 [2021-01-06 23:00:52,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=759, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 23:00:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-01-06 23:00:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 4824. [2021-01-06 23:00:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2021-01-06 23:00:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 11880 transitions. [2021-01-06 23:00:52,304 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 11880 transitions. Word has length 80 [2021-01-06 23:00:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:52,304 INFO L481 AbstractCegarLoop]: Abstraction has 4824 states and 11880 transitions. [2021-01-06 23:00:52,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 11880 transitions. [2021-01-06 23:00:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 23:00:52,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:52,307 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:52,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:52,508 INFO L429 AbstractCegarLoop]: === Iteration 74 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 588849290, now seen corresponding path program 51 times [2021-01-06 23:00:52,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:52,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091638219] [2021-01-06 23:00:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 269 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 23:00:52,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091638219] [2021-01-06 23:00:52,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882785819] [2021-01-06 23:00:52,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:53,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 23:00:53,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:53,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:53,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 9 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 23:00:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 21 [2021-01-06 23:00:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219484110] [2021-01-06 23:00:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 23:00:53,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 23:00:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-01-06 23:00:53,805 INFO L87 Difference]: Start difference. First operand 4824 states and 11880 transitions. Second operand 22 states. [2021-01-06 23:00:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:54,449 INFO L93 Difference]: Finished difference Result 5874 states and 13951 transitions. [2021-01-06 23:00:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 23:00:54,451 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-06 23:00:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:54,458 INFO L225 Difference]: With dead ends: 5874 [2021-01-06 23:00:54,458 INFO L226 Difference]: Without dead ends: 5874 [2021-01-06 23:00:54,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 23:00:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2021-01-06 23:00:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 4838. [2021-01-06 23:00:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2021-01-06 23:00:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 11919 transitions. [2021-01-06 23:00:54,533 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 11919 transitions. Word has length 80 [2021-01-06 23:00:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:54,533 INFO L481 AbstractCegarLoop]: Abstraction has 4838 states and 11919 transitions. [2021-01-06 23:00:54,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 23:00:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 11919 transitions. [2021-01-06 23:00:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 23:00:54,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:54,537 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:54,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:54,738 INFO L429 AbstractCegarLoop]: === Iteration 75 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:54,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1961933261, now seen corresponding path program 52 times [2021-01-06 23:00:54,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:54,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756518368] [2021-01-06 23:00:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 8 proven. 206 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:55,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756518368] [2021-01-06 23:00:55,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131277734] [2021-01-06 23:00:55,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:55,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 23:00:55,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 23:00:55,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 23:00:55,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:00:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 8 proven. 206 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 23:00:55,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 23:00:55,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-06 23:00:55,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927593293] [2021-01-06 23:00:55,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 23:00:55,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:00:55,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 23:00:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-01-06 23:00:55,358 INFO L87 Difference]: Start difference. First operand 4838 states and 11919 transitions. Second operand 19 states. [2021-01-06 23:00:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:00:55,920 INFO L93 Difference]: Finished difference Result 7007 states and 16488 transitions. [2021-01-06 23:00:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 23:00:55,922 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2021-01-06 23:00:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:00:55,929 INFO L225 Difference]: With dead ends: 7007 [2021-01-06 23:00:55,929 INFO L226 Difference]: Without dead ends: 7007 [2021-01-06 23:00:55,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 23:00:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-01-06 23:00:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 5014. [2021-01-06 23:00:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5014 states. [2021-01-06 23:00:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 12415 transitions. [2021-01-06 23:00:55,991 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 12415 transitions. Word has length 81 [2021-01-06 23:00:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:00:55,992 INFO L481 AbstractCegarLoop]: Abstraction has 5014 states and 12415 transitions. [2021-01-06 23:00:55,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 23:00:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 12415 transitions. [2021-01-06 23:00:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 23:00:55,995 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:00:55,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:00:56,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-01-06 23:00:56,196 INFO L429 AbstractCegarLoop]: === Iteration 76 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:00:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:00:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash 964081082, now seen corresponding path program 7 times [2021-01-06 23:00:56,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:00:56,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759889153] [2021-01-06 23:00:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:00:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 37 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:00:59,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759889153] [2021-01-06 23:00:59,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903255116] [2021-01-06 23:00:59,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 23:00:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:00:59,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 125 conjunts are in the unsatisfiable core [2021-01-06 23:00:59,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 23:01:00,075 INFO L382 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 [2021-01-06 23:01:00,076 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 23:01:00,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 23:01:00,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 23:01:00,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:57 [2021-01-06 23:01:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 23:01:00,967 INFO L382 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 71 treesize of output 43 [2021-01-06 23:01:00,969 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 23:01:01,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 23:01:01,012 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 23:01:01,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:62 [2021-01-06 23:01:01,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 23:01:01,785 INFO L382 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 51 treesize of output 38 [2021-01-06 23:01:01,787 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 23:01:01,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 23:01:01,817 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 23:01:01,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:42 [2021-01-06 23:01:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 23:01:02,725 INFO L382 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 51 treesize of output 38 [2021-01-06 23:01:02,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 23:01:02,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 23:01:02,770 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 23:01:02,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:42 [2021-01-06 23:01:03,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 23:01:03,694 INFO L382 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 51 treesize of output 38 [2021-01-06 23:01:03,696 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 23:01:03,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 23:01:03,735 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 23:01:03,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:42 [2021-01-06 23:01:06,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 23:01:06,215 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-01-06 23:01:06,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2021-01-06 23:01:06,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 23:01:06,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-01-06 23:01:06,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567309974] [2021-01-06 23:01:06,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-06 23:01:06,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:01:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-06 23:01:06,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=6321, Unknown=0, NotChecked=0, Total=6972 [2021-01-06 23:01:06,223 INFO L87 Difference]: Start difference. First operand 5014 states and 12415 transitions. Second operand 48 states. [2021-01-06 23:01:06,899 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-01-06 23:01:07,108 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 23:01:07,527 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-01-06 23:01:08,549 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-01-06 23:01:08,771 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2021-01-06 23:01:09,022 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2021-01-06 23:01:09,327 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-01-06 23:01:09,668 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2021-01-06 23:01:10,086 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2021-01-06 23:01:10,359 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2021-01-06 23:01:10,643 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-01-06 23:01:10,873 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2021-01-06 23:01:11,150 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-01-06 23:01:11,657 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-01-06 23:01:11,898 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-01-06 23:01:12,289 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2021-01-06 23:01:12,582 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2021-01-06 23:01:12,922 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2021-01-06 23:01:13,527 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2021-01-06 23:01:13,736 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-01-06 23:01:14,146 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-06 23:01:14,678 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-01-06 23:01:14,941 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-01-06 23:01:15,184 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 31 [2021-01-06 23:01:15,405 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2021-01-06 23:01:15,694 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2021-01-06 23:01:15,941 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2021-01-06 23:01:16,199 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-01-06 23:01:16,488 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-01-06 23:01:16,825 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2021-01-06 23:01:17,319 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54