/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-bitabs-178dd20
[2021-01-07 05:00:10,540 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-01-07 05:00:10,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-01-07 05:00:10,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-01-07 05:00:10,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-01-07 05:00:10,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-01-07 05:00:10,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-01-07 05:00:10,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-01-07 05:00:10,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf
[2021-01-07 05:00:10,745 INFO L113 SettingsManager]: Loading preferences was successful
[2021-01-07 05:00:10,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-01-07 05:00:10,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-01-07 05:00:10,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-01-07 05:00:10,750 INFO L138 SettingsManager]: * Use SBE=true
[2021-01-07 05:00:10,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-01-07 05:00:10,751 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-01-07 05:00:10,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-01-07 05:00:10,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-01-07 05:00:10,751 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-01-07 05:00:10,752 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-01-07 05:00:10,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-01-07 05:00:10,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-01-07 05:00:10,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-01-07 05:00:10,753 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-01-07 05:00:10,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-01-07 05:00:10,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-01-07 05:00:10,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-01-07 05:00:10,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-01-07 05:00:10,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-01-07 05:00:10,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-01-07 05:00:10,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-01-07 05:00:10,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-01-07 05:00:10,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-01-07 05:00:10,755 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-01-07 05:00:11,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-01-07 05:00:11,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-01-07 05:00:11,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-01-07 05:00:11,173 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-01-07 05:00:11,174 INFO L275 PluginConnector]: CDTParser initialized
[2021-01-07 05:00:11,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i
[2021-01-07 05:00:11,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b2302576/009cffb76d5e4e768624ba1fe6026e68/FLAG2c8bf91b2
[2021-01-07 05:00:11,924 INFO L306 CDTParser]: Found 1 translation units.
[2021-01-07 05:00:11,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i
[2021-01-07 05:00:11,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b2302576/009cffb76d5e4e768624ba1fe6026e68/FLAG2c8bf91b2
[2021-01-07 05:00:12,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b2302576/009cffb76d5e4e768624ba1fe6026e68
[2021-01-07 05:00:12,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-01-07 05:00:12,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-01-07 05:00:12,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-01-07 05:00:12,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-01-07 05:00:12,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-01-07 05:00:12,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178fbf01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12, skipping insertion in model container
[2021-01-07 05:00:12,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-01-07 05:00:12,343 INFO L178 MainTranslator]: Built tables and reachable declarations
left hand side expression in assignment: lhs: VariableLHS[~length~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~i~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~val~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~val~0,<LOCAL,main>]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,<LOCAL,main>],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,<LOCAL,main>],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,<LOCAL,main>]]]]]
left hand side expression in assignment: lhs: VariableLHS[~j~0,<LOCAL,main>]
[2021-01-07 05:00:12,707 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-01-07 05:00:12,728 INFO L203 MainTranslator]: Completed pre-run
left hand side expression in assignment: lhs: VariableLHS[~length~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~i~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~val~0,<LOCAL,main>]
left hand side expression in assignment: lhs: VariableLHS[~val~0,<LOCAL,main>]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,<LOCAL,main>],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,<LOCAL,main>],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,<LOCAL,main>]]]]]
left hand side expression in assignment: lhs: VariableLHS[~j~0,<LOCAL,main>]
[2021-01-07 05:00:12,807 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-01-07 05:00:12,863 INFO L208 MainTranslator]: Completed translation
[2021-01-07 05:00:12,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12 WrapperNode
[2021-01-07 05:00:12,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-01-07 05:00:12,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-01-07 05:00:12,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-01-07 05:00:12,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-01-07 05:00:12,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-01-07 05:00:12,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-01-07 05:00:12,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-01-07 05:00:12,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-01-07 05:00:12,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (1/1) ...
[2021-01-07 05:00:12,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-01-07 05:00:12,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-01-07 05:00:12,946 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-01-07 05:00:12,946 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-01-07 05:00:12,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (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
[2021-01-07 05:00:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-01-07 05:00:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-01-07 05:00:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-01-07 05:00:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-01-07 05:00:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-01-07 05:00:13,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-01-07 05:00:13,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-01-07 05:00:13,580 INFO L299 CfgBuilder]: Removed 7 assume(true) statements.
[2021-01-07 05:00:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:13 BoogieIcfgContainer
[2021-01-07 05:00:13,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-01-07 05:00:13,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-01-07 05:00:13,587 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-01-07 05:00:13,597 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-01-07 05:00:13,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:12" (1/3) ...
[2021-01-07 05:00:13,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:13, skipping insertion in model container
[2021-01-07 05:00:13,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12" (2/3) ...
[2021-01-07 05:00:13,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d81ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:13, skipping insertion in model container
[2021-01-07 05:00:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:13" (3/3) ...
[2021-01-07 05:00:13,604 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i
[2021-01-07 05:00:13,617 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-01-07 05:00:13,627 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations.
[2021-01-07 05:00:13,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations.
[2021-01-07 05:00:13,678 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2021-01-07 05:00:13,678 INFO L378 AbstractCegarLoop]: Hoare is false
[2021-01-07 05:00:13,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-01-07 05:00:13,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-01-07 05:00:13,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-01-07 05:00:13,679 INFO L382 AbstractCegarLoop]: Difference is false
[2021-01-07 05:00:13,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-01-07 05:00:13,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-01-07 05:00:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2021-01-07 05:00:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-01-07 05:00:13,706 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:13,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:13,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash 889508774, now seen corresponding path program 1 times
[2021-01-07 05:00:13,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:13,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449274389]
[2021-01-07 05:00:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:13,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449274389]
[2021-01-07 05:00:13,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-07 05:00:13,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-01-07 05:00:13,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051894960]
[2021-01-07 05:00:13,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-01-07 05:00:13,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:13,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-01-07 05:00:13,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-01-07 05:00:13,945 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states.
[2021-01-07 05:00:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:14,019 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions.
[2021-01-07 05:00:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-01-07 05:00:14,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6
[2021-01-07 05:00:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:14,031 INFO L225 Difference]: With dead ends: 31
[2021-01-07 05:00:14,031 INFO L226 Difference]: Without dead ends: 29
[2021-01-07 05:00:14,033 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
[2021-01-07 05:00:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-01-07 05:00:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2021-01-07 05:00:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2021-01-07 05:00:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2021-01-07 05:00:14,072 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6
[2021-01-07 05:00:14,072 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:14,072 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2021-01-07 05:00:14,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-01-07 05:00:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2021-01-07 05:00:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-01-07 05:00:14,073 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:14,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:14,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-01-07 05:00:14,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:14,075 INFO L82 PathProgramCache]: Analyzing trace with hash 119449364, now seen corresponding path program 1 times
[2021-01-07 05:00:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123972706]
[2021-01-07 05:00:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123972706]
[2021-01-07 05:00:14,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-07 05:00:14,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-01-07 05:00:14,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782554027]
[2021-01-07 05:00:14,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-01-07 05:00:14,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:14,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-01-07 05:00:14,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-01-07 05:00:14,127 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states.
[2021-01-07 05:00:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:14,180 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions.
[2021-01-07 05:00:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-01-07 05:00:14,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8
[2021-01-07 05:00:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:14,182 INFO L225 Difference]: With dead ends: 25
[2021-01-07 05:00:14,182 INFO L226 Difference]: Without dead ends: 25
[2021-01-07 05:00:14,183 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
[2021-01-07 05:00:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-01-07 05:00:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2021-01-07 05:00:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2021-01-07 05:00:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions.
[2021-01-07 05:00:14,188 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8
[2021-01-07 05:00:14,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:14,189 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions.
[2021-01-07 05:00:14,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-01-07 05:00:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions.
[2021-01-07 05:00:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-01-07 05:00:14,190 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:14,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:14,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-01-07 05:00:14,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 119449365, now seen corresponding path program 1 times
[2021-01-07 05:00:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:14,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344582956]
[2021-01-07 05:00:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:14,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344582956]
[2021-01-07 05:00:14,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-07 05:00:14,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-01-07 05:00:14,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010581530]
[2021-01-07 05:00:14,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-01-07 05:00:14,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:14,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-01-07 05:00:14,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-01-07 05:00:14,332 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states.
[2021-01-07 05:00:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:14,455 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions.
[2021-01-07 05:00:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-01-07 05:00:14,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8
[2021-01-07 05:00:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:14,458 INFO L225 Difference]: With dead ends: 29
[2021-01-07 05:00:14,458 INFO L226 Difference]: Without dead ends: 29
[2021-01-07 05:00:14,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-01-07 05:00:14,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-01-07 05:00:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2021-01-07 05:00:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2021-01-07 05:00:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions.
[2021-01-07 05:00:14,464 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 8
[2021-01-07 05:00:14,464 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:14,465 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions.
[2021-01-07 05:00:14,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-01-07 05:00:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions.
[2021-01-07 05:00:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-07 05:00:14,466 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:14,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:14,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-01-07 05:00:14,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2056141710, now seen corresponding path program 1 times
[2021-01-07 05:00:14,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:14,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003109378]
[2021-01-07 05:00:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003109378]
[2021-01-07 05:00:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474191964]
[2021-01-07 05:00:14,554 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
[2021-01-07 05:00:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-01-07 05:00:14,651 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:14,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-01-07 05:00:14,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2021-01-07 05:00:14,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573045213]
[2021-01-07 05:00:14,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-01-07 05:00:14,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-01-07 05:00:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-01-07 05:00:14,776 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states.
[2021-01-07 05:00:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:14,848 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions.
[2021-01-07 05:00:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-01-07 05:00:14,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2021-01-07 05:00:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:14,850 INFO L225 Difference]: With dead ends: 50
[2021-01-07 05:00:14,850 INFO L226 Difference]: Without dead ends: 50
[2021-01-07 05:00:14,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-01-07 05:00:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-01-07 05:00:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35.
[2021-01-07 05:00:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2021-01-07 05:00:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions.
[2021-01-07 05:00:14,857 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 12
[2021-01-07 05:00:14,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:14,857 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions.
[2021-01-07 05:00:14,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-01-07 05:00:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions.
[2021-01-07 05:00:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-07 05:00:14,859 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:14,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:15,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:15,075 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:15,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1663114700, now seen corresponding path program 1 times
[2021-01-07 05:00:15,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:15,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697666802]
[2021-01-07 05:00:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:15,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697666802]
[2021-01-07 05:00:15,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290299006]
[2021-01-07 05:00:15,256 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 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
[2021-01-07 05:00:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:15,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-01-07 05:00:15,344 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:15,399 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7
[2021-01-07 05:00:15,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-01-07 05:00:15,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-01-07 05:00:15,419 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-01-07 05:00:15,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11
[2021-01-07 05:00:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:15,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-01-07 05:00:15,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2021-01-07 05:00:15,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648652744]
[2021-01-07 05:00:15,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-01-07 05:00:15,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:15,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-01-07 05:00:15,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-01-07 05:00:15,554 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 8 states.
[2021-01-07 05:00:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:15,708 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2021-01-07 05:00:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-01-07 05:00:15,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2021-01-07 05:00:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:15,710 INFO L225 Difference]: With dead ends: 35
[2021-01-07 05:00:15,710 INFO L226 Difference]: Without dead ends: 35
[2021-01-07 05:00:15,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2021-01-07 05:00:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2021-01-07 05:00:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2021-01-07 05:00:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2021-01-07 05:00:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions.
[2021-01-07 05:00:15,715 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12
[2021-01-07 05:00:15,716 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:15,716 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions.
[2021-01-07 05:00:15,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2021-01-07 05:00:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions.
[2021-01-07 05:00:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-01-07 05:00:15,717 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:15,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:15,932 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash -684163994, now seen corresponding path program 1 times
[2021-01-07 05:00:15,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:15,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468579153]
[2021-01-07 05:00:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468579153]
[2021-01-07 05:00:16,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273681727]
[2021-01-07 05:00:16,045 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
[2021-01-07 05:00:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:16,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-01-07 05:00:16,126 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:16,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-01-07 05:00:16,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10
[2021-01-07 05:00:16,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689220968]
[2021-01-07 05:00:16,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-01-07 05:00:16,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:16,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-01-07 05:00:16,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2021-01-07 05:00:16,232 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 11 states.
[2021-01-07 05:00:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:16,433 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions.
[2021-01-07 05:00:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-01-07 05:00:16,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13
[2021-01-07 05:00:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:16,438 INFO L225 Difference]: With dead ends: 46
[2021-01-07 05:00:16,443 INFO L226 Difference]: Without dead ends: 46
[2021-01-07 05:00:16,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156
[2021-01-07 05:00:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-01-07 05:00:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39.
[2021-01-07 05:00:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2021-01-07 05:00:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions.
[2021-01-07 05:00:16,458 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 13
[2021-01-07 05:00:16,459 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:16,459 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions.
[2021-01-07 05:00:16,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-01-07 05:00:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions.
[2021-01-07 05:00:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-01-07 05:00:16,460 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:16,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:16,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:16,677 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:16,678 INFO L82 PathProgramCache]: Analyzing trace with hash 265751470, now seen corresponding path program 1 times
[2021-01-07 05:00:16,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:16,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135003854]
[2021-01-07 05:00:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-01-07 05:00:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135003854]
[2021-01-07 05:00:16,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-07 05:00:16,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-01-07 05:00:16,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454890322]
[2021-01-07 05:00:16,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-01-07 05:00:16,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:16,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-01-07 05:00:16,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-01-07 05:00:16,720 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states.
[2021-01-07 05:00:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:16,758 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions.
[2021-01-07 05:00:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-01-07 05:00:16,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2021-01-07 05:00:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:16,759 INFO L225 Difference]: With dead ends: 40
[2021-01-07 05:00:16,759 INFO L226 Difference]: Without dead ends: 40
[2021-01-07 05:00:16,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-01-07 05:00:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-01-07 05:00:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39.
[2021-01-07 05:00:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2021-01-07 05:00:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions.
[2021-01-07 05:00:16,763 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14
[2021-01-07 05:00:16,764 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:16,764 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions.
[2021-01-07 05:00:16,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-01-07 05:00:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions.
[2021-01-07 05:00:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-01-07 05:00:16,765 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:16,765 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:16,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-01-07 05:00:16,765 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1412805497, now seen corresponding path program 1 times
[2021-01-07 05:00:16,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:16,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10597884]
[2021-01-07 05:00:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-01-07 05:00:16,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10597884]
[2021-01-07 05:00:16,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685536620]
[2021-01-07 05:00:16,824 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 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
[2021-01-07 05:00:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:16,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-01-07 05:00:16,877 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-01-07 05:00:16,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-01-07 05:00:16,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2021-01-07 05:00:16,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947363524]
[2021-01-07 05:00:16,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-01-07 05:00:16,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:16,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-01-07 05:00:16,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-01-07 05:00:16,965 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states.
[2021-01-07 05:00:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:17,015 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions.
[2021-01-07 05:00:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-01-07 05:00:17,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17
[2021-01-07 05:00:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:17,018 INFO L225 Difference]: With dead ends: 52
[2021-01-07 05:00:17,018 INFO L226 Difference]: Without dead ends: 52
[2021-01-07 05:00:17,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-01-07 05:00:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2021-01-07 05:00:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49.
[2021-01-07 05:00:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2021-01-07 05:00:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions.
[2021-01-07 05:00:17,039 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 17
[2021-01-07 05:00:17,039 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:17,039 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions.
[2021-01-07 05:00:17,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-01-07 05:00:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions.
[2021-01-07 05:00:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-01-07 05:00:17,043 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:17,043 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:17,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:17,258 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 132941819, now seen corresponding path program 1 times
[2021-01-07 05:00:17,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:17,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682844616]
[2021-01-07 05:00:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:17,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682844616]
[2021-01-07 05:00:17,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358203407]
[2021-01-07 05:00:17,333 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 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
[2021-01-07 05:00:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:17,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-01-07 05:00:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:17,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-01-07 05:00:17,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2021-01-07 05:00:17,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377227489]
[2021-01-07 05:00:17,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-01-07 05:00:17,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-01-07 05:00:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2021-01-07 05:00:17,474 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 10 states.
[2021-01-07 05:00:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:17,646 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions.
[2021-01-07 05:00:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-01-07 05:00:17,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2021-01-07 05:00:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:17,650 INFO L225 Difference]: With dead ends: 69
[2021-01-07 05:00:17,650 INFO L226 Difference]: Without dead ends: 69
[2021-01-07 05:00:17,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2021-01-07 05:00:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2021-01-07 05:00:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53.
[2021-01-07 05:00:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2021-01-07 05:00:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions.
[2021-01-07 05:00:17,659 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 17
[2021-01-07 05:00:17,659 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:17,660 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions.
[2021-01-07 05:00:17,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-01-07 05:00:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions.
[2021-01-07 05:00:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-01-07 05:00:17,662 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:17,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:17,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:17,879 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:17,880 INFO L82 PathProgramCache]: Analyzing trace with hash 847296251, now seen corresponding path program 1 times
[2021-01-07 05:00:17,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:17,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469735918]
[2021-01-07 05:00:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-01-07 05:00:17,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469735918]
[2021-01-07 05:00:17,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-07 05:00:17,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-01-07 05:00:17,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094266324]
[2021-01-07 05:00:17,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-01-07 05:00:17,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-01-07 05:00:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-01-07 05:00:17,945 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 4 states.
[2021-01-07 05:00:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:17,965 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions.
[2021-01-07 05:00:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-01-07 05:00:17,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18
[2021-01-07 05:00:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:17,966 INFO L225 Difference]: With dead ends: 52
[2021-01-07 05:00:17,966 INFO L226 Difference]: Without dead ends: 33
[2021-01-07 05:00:17,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-01-07 05:00:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-01-07 05:00:17,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2021-01-07 05:00:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2021-01-07 05:00:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions.
[2021-01-07 05:00:17,969 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 18
[2021-01-07 05:00:17,969 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:17,969 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions.
[2021-01-07 05:00:17,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-01-07 05:00:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions.
[2021-01-07 05:00:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-01-07 05:00:17,970 INFO L414 BasicCegarLoop]: Found error trace
[2021-01-07 05:00:17,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-07 05:00:17,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-01-07 05:00:17,971 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]===
[2021-01-07 05:00:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-01-07 05:00:17,972 INFO L82 PathProgramCache]: Analyzing trace with hash -719856990, now seen corresponding path program 2 times
[2021-01-07 05:00:17,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-07 05:00:17,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506022693]
[2021-01-07 05:00:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-07 05:00:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-07 05:00:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-07 05:00:18,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506022693]
[2021-01-07 05:00:18,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988332208]
[2021-01-07 05:00:18,076 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 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
[2021-01-07 05:00:18,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-01-07 05:00:18,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-01-07 05:00:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-01-07 05:00:18,133 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-01-07 05:00:18,143 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7
[2021-01-07 05:00:18,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-01-07 05:00:18,149 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-01-07 05:00:18,150 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-01-07 05:00:18,150 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11
[2021-01-07 05:00:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-01-07 05:00:18,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-01-07 05:00:18,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11
[2021-01-07 05:00:18,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302029533]
[2021-01-07 05:00:18,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-01-07 05:00:18,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-07 05:00:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-01-07 05:00:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-01-07 05:00:18,262 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 12 states.
[2021-01-07 05:00:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-07 05:00:18,505 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions.
[2021-01-07 05:00:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-01-07 05:00:18,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21
[2021-01-07 05:00:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-07 05:00:18,507 INFO L225 Difference]: With dead ends: 32
[2021-01-07 05:00:18,507 INFO L226 Difference]: Without dead ends: 0
[2021-01-07 05:00:18,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306
[2021-01-07 05:00:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-01-07 05:00:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-01-07 05:00:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-01-07 05:00:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-01-07 05:00:18,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2021-01-07 05:00:18,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-01-07 05:00:18,509 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-01-07 05:00:18,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2021-01-07 05:00:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-01-07 05:00:18,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-01-07 05:00:18,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-01-07 05:00:18,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:00:18 BoogieIcfgContainer
[2021-01-07 05:00:18,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-01-07 05:00:18,718 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-01-07 05:00:18,718 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-01-07 05:00:18,719 INFO L275 PluginConnector]: Witness Printer initialized
[2021-01-07 05:00:18,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:13" (3/4) ...
[2021-01-07 05:00:18,723 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-01-07 05:00:18,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2021-01-07 05:00:18,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2021-01-07 05:00:18,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-01-07 05:00:18,786 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/count_down-alloca-1.i-witness.graphml
[2021-01-07 05:00:18,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-01-07 05:00:18,788 INFO L168 Benchmark]: Toolchain (without parser) took 6536.48 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 128.9 MB in the beginning and 143.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,789 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.09 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 108.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 155.2 MB. Free memory was 108.6 MB in the beginning and 106.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,790 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 105.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,793 INFO L168 Benchmark]: RCFGBuilder took 636.07 ms. Allocated memory is still 155.2 MB. Free memory was 105.4 MB in the beginning and 124.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,794 INFO L168 Benchmark]: TraceAbstraction took 5130.73 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 123.6 MB in the beginning and 146.3 MB in the end (delta: -22.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,794 INFO L168 Benchmark]: Witness Printer took 68.45 ms. Allocated memory is still 192.9 MB. Free memory was 145.8 MB in the beginning and 143.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-01-07 05:00:18,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 610.09 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 108.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
* Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 155.2 MB. Free memory was 108.6 MB in the beginning and 106.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 27.78 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 105.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 636.07 ms. Allocated memory is still 155.2 MB. Free memory was 105.4 MB in the beginning and 124.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 5130.73 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 123.6 MB in the beginning and 146.3 MB in the end (delta: -22.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB.
* Witness Printer took 68.45 ms. Allocated memory is still 192.9 MB. Free memory was 145.8 MB in the beginning and 143.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 528]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 524]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 528]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 524]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 528]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 512]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- PositiveResult [Line: 528]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 527]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 527]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- AllSpecificationsHoldResult: All specifications hold
9 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 31 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 545 SDslu, 321 SDs, 0 SdLazy, 470 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 20236 SizeOfPredicates, 15 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 24/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...