/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 07:21:37,108 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 07:21:37,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 07:21:37,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
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[2021-05-01 07:21:37,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 07:21:37,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-05-01 07:21:37,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 07:21:37,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 07:21:37,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-05-01 07:21:37,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2021-05-01 07:21:37,213 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 07:21:37,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 07:21:37,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 07:21:37,216 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 07:21:37,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 07:21:37,217 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 07:21:37,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 07:21:37,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 07:21:37,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 07:21:37,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 07:21:37,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 07:21:37,218 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 07:21:37,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 07:21:37,219 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 07:21:37,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 07:21:37,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 07:21:37,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 07:21:37,532 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 07:21:37,532 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 07:21:37,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i
[2021-05-01 07:21:37,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fe4f6d4/790fd5eb3c6348b78627980cd3cd5db5/FLAG1efb9e367
[2021-05-01 07:21:37,976 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 07:21:37,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i
[2021-05-01 07:21:37,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fe4f6d4/790fd5eb3c6348b78627980cd3cd5db5/FLAG1efb9e367
[2021-05-01 07:21:37,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fe4f6d4/790fd5eb3c6348b78627980cd3cd5db5
[2021-05-01 07:21:37,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 07:21:38,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 07:21:38,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 07:21:38,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 07:21:38,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 07:21:38,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:21:37" (1/1) ...
[2021-05-01 07:21:38,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589cdfb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38, skipping insertion in model container
[2021-05-01 07:21:38,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:21:37" (1/1) ...
[2021-05-01 07:21:38,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 07:21:38,027 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 07:21:38,140 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908]
[2021-05-01 07:21:38,150 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 07:21:38,156 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 07:21:38,166 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i[895,908]
[2021-05-01 07:21:38,171 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 07:21:38,192 INFO L208 MainTranslator]: Completed translation
[2021-05-01 07:21:38,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38 WrapperNode
[2021-05-01 07:21:38,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 07:21:38,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 07:21:38,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 07:21:38,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 07:21:38,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
[2021-05-01 07:21:38,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 07:21:38,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 07:21:38,249 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 07:21:38,250 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 07:21:38,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 07:21:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 07:21:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 07:21:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 07:21:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 07:21:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 07:21:38,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 07:21:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 07:21:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 07:21:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-05-01 07:21:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-05-01 07:21:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 07:21:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 07:21:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 07:21:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 07:21:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 07:21:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 07:21:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 07:21:38,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 07:21:38,512 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 07:21:38,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:21:38 BoogieIcfgContainer
[2021-05-01 07:21:38,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 07:21:38,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 07:21:38,514 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 07:21:38,516 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 07:21:38,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:21:37" (1/3) ...
[2021-05-01 07:21:38,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4b7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:21:38, skipping insertion in model container
[2021-05-01 07:21:38,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:21:38" (2/3) ...
[2021-05-01 07:21:38,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4b7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:21:38, skipping insertion in model container
[2021-05-01 07:21:38,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:21:38" (3/3) ...
[2021-05-01 07:21:38,518 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i
[2021-05-01 07:21:38,522 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 07:21:38,524 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 07:21:38,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 07:21:38,546 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 07:21:38,547 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 07:21:38,547 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 07:21:38,547 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 07:21:38,547 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 07:21:38,547 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 07:21:38,547 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 07:21:38,547 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 07:21:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 07:21:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-05-01 07:21:38,559 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:21:38,560 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:21:38,560 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:21:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:21:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 499112448, now seen corresponding path program 1 times
[2021-05-01 07:21:38,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:21:38,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715690028]
[2021-05-01 07:21:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:21:38,608 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:21:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:38,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:38,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:21:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:38,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:21:38,752 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:21:38,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715690028]
[2021-05-01 07:21:38,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1715690028] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:21:38,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:21:38,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 07:21:38,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188128984]
[2021-05-01 07:21:38,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 07:21:38,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:21:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 07:21:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 07:21:38,773 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:21:38,838 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions.
[2021-05-01 07:21:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 07:21:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2021-05-01 07:21:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:21:38,846 INFO L225 Difference]: With dead ends: 33
[2021-05-01 07:21:38,846 INFO L226 Difference]: Without dead ends: 14
[2021-05-01 07:21:38,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 07:21:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2021-05-01 07:21:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2021-05-01 07:21:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2021-05-01 07:21:38,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13
[2021-05-01 07:21:38,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:21:38,885 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2021-05-01 07:21:38,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2021-05-01 07:21:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-05-01 07:21:38,886 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:21:38,886 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:21:38,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 07:21:38,887 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:21:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:21:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash 495418364, now seen corresponding path program 1 times
[2021-05-01 07:21:38,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:21:38,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779096836]
[2021-05-01 07:21:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:21:38,900 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 07:21:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:38,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:38,954 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size
[2021-05-01 07:21:38,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20
[2021-05-01 07:21:38,965 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size
[2021-05-01 07:21:38,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 07:21:38,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:21:38,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:21:38,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:38,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:21:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:39,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:21:39,017 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:21:39,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779096836]
[2021-05-01 07:21:39,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779096836] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:21:39,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:21:39,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 07:21:39,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583209227]
[2021-05-01 07:21:39,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 07:21:39,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:21:39,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 07:21:39,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-05-01 07:21:39,020 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:21:39,217 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2021-05-01 07:21:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 07:21:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2021-05-01 07:21:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:21:39,218 INFO L225 Difference]: With dead ends: 20
[2021-05-01 07:21:39,218 INFO L226 Difference]: Without dead ends: 15
[2021-05-01 07:21:39,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-05-01 07:21:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-05-01 07:21:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2021-05-01 07:21:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2021-05-01 07:21:39,223 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13
[2021-05-01 07:21:39,224 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:21:39,224 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2021-05-01 07:21:39,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2021-05-01 07:21:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-05-01 07:21:39,224 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 07:21:39,224 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 07:21:39,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 07:21:39,225 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 07:21:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 07:21:39,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1787404818, now seen corresponding path program 1 times
[2021-05-01 07:21:39,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 07:21:39,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885022638]
[2021-05-01 07:21:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 07:21:39,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 07:21:39,253 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~cnt~0_7) InVars {main_~cnt~0=v_main_~cnt~0_7} OutVars{main_~cnt~0=v_main_~cnt~0_7} AuxVars[] AssignedVars[]
[2021-05-01 07:21:39,261 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 88.9 percent of original size
[2021-05-01 07:21:39,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,273 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,283 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:21:39,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-05-01 07:21:39,287 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,288 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,290 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,292 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size
[2021-05-01 07:21:39,294 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,295 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 88.9 percent of original size 48
[2021-05-01 07:21:39,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40
[2021-05-01 07:21:39,310 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2021-05-01 07:21:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:39,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20
[2021-05-01 07:21:39,378 INFO L142 QuantifierPusher]: treesize reduction 26, result has 58.1 percent of original size
[2021-05-01 07:21:39,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36
[2021-05-01 07:21:39,396 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size
[2021-05-01 07:21:39,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 07:21:39,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:21:39,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 07:21:39,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 07:21:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 07:21:39,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 07:21:39,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,466 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 07:21:39,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60
[2021-05-01 07:21:39,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61
[2021-05-01 07:21:39,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26
[2021-05-01 07:21:39,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 07:21:39,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 07:21:39,492 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 07:21:39,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885022638]
[2021-05-01 07:21:39,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885022638] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 07:21:39,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 07:21:39,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 07:21:39,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846717630]
[2021-05-01 07:21:39,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 07:21:39,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 07:21:39,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 07:21:39,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2021-05-01 07:21:39,495 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 07:21:39,647 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2021-05-01 07:21:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 07:21:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2021-05-01 07:21:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 07:21:39,648 INFO L225 Difference]: With dead ends: 15
[2021-05-01 07:21:39,648 INFO L226 Difference]: Without dead ends: 0
[2021-05-01 07:21:39,649 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-05-01 07:21:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-05-01 07:21:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-05-01 07:21:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-05-01 07:21:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-05-01 07:21:39,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14
[2021-05-01 07:21:39,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 07:21:39,649 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-05-01 07:21:39,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 07:21:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-05-01 07:21:39,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-05-01 07:21:39,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 07:21:39,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-05-01 07:21:39,808 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed.
[2021-05-01 07:21:39,809 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed.
[2021-05-01 07:21:39,809 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed.
[2021-05-01 07:21:39,809 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,809 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|))
[2021-05-01 07:21:39,809 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,809 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,810 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,810 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,810 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-05-01 07:21:39,810 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed.
[2021-05-01 07:21:39,810 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:21:39,810 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:21:39,810 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed.
[2021-05-01 07:21:39,811 INFO L194 CegarLoopUtils]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~res~0 .cse0)))
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L194 CegarLoopUtils]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1)))
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 38) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 38) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true
[2021-05-01 07:21:39,811 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true
[2021-05-01 07:21:39,812 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true
[2021-05-01 07:21:39,812 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-05-01 07:21:39,812 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-05-01 07:21:39,813 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-05-01 07:21:39,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:21:39 BoogieIcfgContainer
[2021-05-01 07:21:39,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 07:21:39,832 INFO L168 Benchmark]: Toolchain (without parser) took 1827.79 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 92.5 MB in the end (delta: 77.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,833 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 203.4 MB. Free memory is still 185.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.65 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 187.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,839 INFO L168 Benchmark]: Boogie Preprocessor took 54.34 ms. Allocated memory is still 203.4 MB. Free memory was 187.7 MB in the beginning and 185.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,840 INFO L168 Benchmark]: RCFGBuilder took 263.61 ms. Allocated memory is still 203.4 MB. Free memory was 185.6 MB in the beginning and 171.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,840 INFO L168 Benchmark]: TraceAbstraction took 1314.03 ms. Allocated memory is still 203.4 MB. Free memory was 170.9 MB in the beginning and 92.5 MB in the end (delta: 78.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 8.0 GB.
[2021-05-01 07:21:39,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 203.4 MB. Free memory is still 185.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 187.65 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 187.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 54.34 ms. Allocated memory is still 203.4 MB. Free memory was 187.7 MB in the beginning and 185.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 263.61 ms. Allocated memory is still 203.4 MB. Free memory was 185.6 MB in the beginning and 171.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1314.03 ms. Allocated memory is still 203.4 MB. Free memory was 170.9 MB in the beginning and 92.5 MB in the end (delta: 78.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 19]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1105.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.2ms, AutomataDifference: 444.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 157.3ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 33 SDslu, 40 SDs, 0 SdLazy, 64 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 384.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 33 PreInvPairs, 45 NumberOfFragments, 86 HoareAnnotationTreeSize, 33 FomulaSimplifications, 64 FormulaSimplificationTreeSizeReduction, 37.6ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 365 FormulaSimplificationTreeSizeReductionInter, 104.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 32]: Loop Invariant
Derived loop invariant: (a + b <= res + cnt && res + cnt <= a + b) && res <= a + b
- ProcedureContractResult [Line: 24]: Procedure Contract for main
Derived contract for procedure main: 1
- ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert: 1
RESULT: Ultimate proved your program to be correct!
Received shutdown request...