/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-23 18:43:44,334 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 18:43:44,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 18:43:44,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 18:43:44,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 18:43:44,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 18:43:44,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 18:43:44,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 18:43:44,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 18:43:44,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-23 18:43:44,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-10-23 18:43:44,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 18:43:44,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 18:43:44,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 18:43:44,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 18:43:44,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 18:43:44,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 18:43:44,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 18:43:44,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 18:43:44,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values
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[2020-10-23 18:43:44,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-10-23 18:43:44,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-23 18:43:44,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 18:43:44,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-23 18:43:44,559 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 18:43:44,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 18:43:44,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 18:43:44,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-23 18:43:44,564 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-23 18:43:44,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 18:43:44,565 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 18:43:44,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 18:43:44,565 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 18:43:44,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 18:43:44,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 18:43:44,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 18:43:44,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 18:43:44,568 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 18:43:44,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 18:43:44,568 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 18:43:44,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 18:43:44,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 18:43:44,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-23 18:43:44,569 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 18:43:44,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 18:43:44,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 18:43:44,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 18:43:44,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 18:43:44,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 18:43:44,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-23 18:43:44,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 18:43:44,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 18:43:44,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-23 18:43:44,572 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/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 18:43:45,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 18:43:45,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 18:43:45,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 18:43:45,152 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 18:43:45,152 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 18:43:45,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c
[2020-10-23 18:43:45,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f549aba3b/b24968bd4091457387edf163ae3d0bae/FLAG43506af3a
[2020-10-23 18:43:45,842 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 18:43:45,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c
[2020-10-23 18:43:45,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f549aba3b/b24968bd4091457387edf163ae3d0bae/FLAG43506af3a
[2020-10-23 18:43:46,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f549aba3b/b24968bd4091457387edf163ae3d0bae
[2020-10-23 18:43:46,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 18:43:46,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 18:43:46,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 18:43:46,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 18:43:46,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 18:43:46,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154514ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46, skipping insertion in model container
[2020-10-23 18:43:46,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 18:43:46,293 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 18:43:46,468 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:43:46,479 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 18:43:46,496 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:43:46,512 INFO L208 MainTranslator]: Completed translation
[2020-10-23 18:43:46,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46 WrapperNode
[2020-10-23 18:43:46,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 18:43:46,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 18:43:46,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 18:43:46,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 18:43:46,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
[2020-10-23 18:43:46,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 18:43:46,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 18:43:46,550 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 18:43:46,550 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 18:43:46,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 18:43:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 18:43:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 18:43:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 18:43:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-10-23 18:43:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 18:43:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 18:43:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 18:43:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 18:43:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 18:43:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 18:43:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 18:43:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 18:43:46,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 18:43:46,906 INFO L298 CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-23 18:43:46,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:46 BoogieIcfgContainer
[2020-10-23 18:43:46,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 18:43:46,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 18:43:46,910 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 18:43:46,914 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 18:43:46,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:46" (1/3) ...
[2020-10-23 18:43:46,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2427b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:46, skipping insertion in model container
[2020-10-23 18:43:46,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:46" (2/3) ...
[2020-10-23 18:43:46,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2427b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:46, skipping insertion in model container
[2020-10-23 18:43:46,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:46" (3/3) ...
[2020-10-23 18:43:46,918 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c
[2020-10-23 18:43:46,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 18:43:46,937 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 18:43:46,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 18:43:47,012 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 18:43:47,012 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 18:43:47,012 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 18:43:47,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 18:43:47,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 18:43:47,013 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 18:43:47,013 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 18:43:47,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 18:43:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states.
[2020-10-23 18:43:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-23 18:43:47,038 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:47,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:47,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash 783588435, now seen corresponding path program 1 times
[2020-10-23 18:43:47,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:47,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393599929]
[2020-10-23 18:43:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:47,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393599929]
[2020-10-23 18:43:47,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 18:43:47,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-23 18:43:47,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302000078]
[2020-10-23 18:43:47,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-10-23 18:43:47,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:47,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-10-23 18:43:47,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-23 18:43:47,374 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states.
[2020-10-23 18:43:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:47,502 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions.
[2020-10-23 18:43:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-23 18:43:47,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12
[2020-10-23 18:43:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:47,523 INFO L225 Difference]: With dead ends: 34
[2020-10-23 18:43:47,524 INFO L226 Difference]: Without dead ends: 13
[2020-10-23 18:43:47,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-23 18:43:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2020-10-23 18:43:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2020-10-23 18:43:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2020-10-23 18:43:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2020-10-23 18:43:47,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12
[2020-10-23 18:43:47,596 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:47,596 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2020-10-23 18:43:47,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-10-23 18:43:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2020-10-23 18:43:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-10-23 18:43:47,598 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:47,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:47,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 18:43:47,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash 669071831, now seen corresponding path program 1 times
[2020-10-23 18:43:47,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:47,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624913280]
[2020-10-23 18:43:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:47,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624913280]
[2020-10-23 18:43:47,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 18:43:47,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-23 18:43:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682465891]
[2020-10-23 18:43:47,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-23 18:43:47,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-23 18:43:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-23 18:43:47,879 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states.
[2020-10-23 18:43:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:48,041 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2020-10-23 18:43:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-10-23 18:43:48,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2020-10-23 18:43:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:48,044 INFO L225 Difference]: With dead ends: 20
[2020-10-23 18:43:48,045 INFO L226 Difference]: Without dead ends: 14
[2020-10-23 18:43:48,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-23 18:43:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2020-10-23 18:43:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2020-10-23 18:43:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2020-10-23 18:43:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2020-10-23 18:43:48,066 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2020-10-23 18:43:48,066 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:48,067 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2020-10-23 18:43:48,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-23 18:43:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2020-10-23 18:43:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-10-23 18:43:48,069 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:48,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:48,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 18:43:48,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash 396678398, now seen corresponding path program 1 times
[2020-10-23 18:43:48,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:48,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194559396]
[2020-10-23 18:43:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:48,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194559396]
[2020-10-23 18:43:48,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905140932]
[2020-10-23 18:43:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:48,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-10-23 18:43:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:43:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:48,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:43:48,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2020-10-23 18:43:48,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315698875]
[2020-10-23 18:43:48,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-23 18:43:48,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-23 18:43:48,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-23 18:43:48,411 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states.
[2020-10-23 18:43:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:48,594 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions.
[2020-10-23 18:43:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-10-23 18:43:48,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13
[2020-10-23 18:43:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:48,596 INFO L225 Difference]: With dead ends: 21
[2020-10-23 18:43:48,596 INFO L226 Difference]: Without dead ends: 15
[2020-10-23 18:43:48,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2020-10-23 18:43:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2020-10-23 18:43:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2020-10-23 18:43:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2020-10-23 18:43:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2020-10-23 18:43:48,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13
[2020-10-23 18:43:48,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:48,603 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2020-10-23 18:43:48,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-23 18:43:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2020-10-23 18:43:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-23 18:43:48,604 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:48,605 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:48,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2020-10-23 18:43:48,818 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash 542416567, now seen corresponding path program 2 times
[2020-10-23 18:43:48,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:48,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628834510]
[2020-10-23 18:43:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:48,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628834510]
[2020-10-23 18:43:48,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318709729]
[2020-10-23 18:43:48,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:49,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-23 18:43:49,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-23 18:43:49,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-10-23 18:43:49,046 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:43:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:49,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:43:49,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7
[2020-10-23 18:43:49,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753854711]
[2020-10-23 18:43:49,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-23 18:43:49,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-23 18:43:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-23 18:43:49,105 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states.
[2020-10-23 18:43:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:49,252 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions.
[2020-10-23 18:43:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-23 18:43:49,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14
[2020-10-23 18:43:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:49,253 INFO L225 Difference]: With dead ends: 22
[2020-10-23 18:43:49,253 INFO L226 Difference]: Without dead ends: 16
[2020-10-23 18:43:49,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2020-10-23 18:43:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2020-10-23 18:43:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2020-10-23 18:43:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2020-10-23 18:43:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2020-10-23 18:43:49,260 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14
[2020-10-23 18:43:49,260 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:49,260 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2020-10-23 18:43:49,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-23 18:43:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2020-10-23 18:43:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-23 18:43:49,261 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:49,262 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:49,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:49,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash 765332510, now seen corresponding path program 3 times
[2020-10-23 18:43:49,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:49,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917339115]
[2020-10-23 18:43:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:49,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917339115]
[2020-10-23 18:43:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854755505]
[2020-10-23 18:43:49,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:49,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-10-23 18:43:49,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-23 18:43:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-10-23 18:43:49,663 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:43:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:49,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:43:49,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8
[2020-10-23 18:43:49,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80685724]
[2020-10-23 18:43:49,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-23 18:43:49,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:49,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-23 18:43:49,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-23 18:43:49,700 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states.
[2020-10-23 18:43:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:49,892 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions.
[2020-10-23 18:43:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-10-23 18:43:49,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15
[2020-10-23 18:43:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:49,894 INFO L225 Difference]: With dead ends: 23
[2020-10-23 18:43:49,894 INFO L226 Difference]: Without dead ends: 17
[2020-10-23 18:43:49,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2020-10-23 18:43:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2020-10-23 18:43:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2020-10-23 18:43:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2020-10-23 18:43:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2020-10-23 18:43:49,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15
[2020-10-23 18:43:49,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:49,902 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2020-10-23 18:43:49,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-23 18:43:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2020-10-23 18:43:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-23 18:43:49,903 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:49,903 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:50,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:50,116 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:50,118 INFO L82 PathProgramCache]: Analyzing trace with hash -914207849, now seen corresponding path program 4 times
[2020-10-23 18:43:50,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:50,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317518053]
[2020-10-23 18:43:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:50,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317518053]
[2020-10-23 18:43:50,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152411307]
[2020-10-23 18:43:50,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:50,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-10-23 18:43:50,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-23 18:43:50,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-10-23 18:43:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:43:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:50,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:43:50,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9
[2020-10-23 18:43:50,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837597142]
[2020-10-23 18:43:50,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-10-23 18:43:50,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-10-23 18:43:50,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-10-23 18:43:50,345 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states.
[2020-10-23 18:43:50,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:50,634 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions.
[2020-10-23 18:43:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-10-23 18:43:50,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16
[2020-10-23 18:43:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:50,636 INFO L225 Difference]: With dead ends: 24
[2020-10-23 18:43:50,636 INFO L226 Difference]: Without dead ends: 18
[2020-10-23 18:43:50,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2020-10-23 18:43:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2020-10-23 18:43:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2020-10-23 18:43:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2020-10-23 18:43:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2020-10-23 18:43:50,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16
[2020-10-23 18:43:50,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:50,643 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2020-10-23 18:43:50,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-10-23 18:43:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2020-10-23 18:43:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-10-23 18:43:50,644 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:50,644 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:50,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:50,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1440351426, now seen corresponding path program 5 times
[2020-10-23 18:43:50,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:50,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418539467]
[2020-10-23 18:43:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:43:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:43:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:51,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418539467]
[2020-10-23 18:43:51,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962984402]
[2020-10-23 18:43:51,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:43:51,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-10-23 18:43:51,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-23 18:43:51,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-10-23 18:43:51,151 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:43:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:43:51,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:43:51,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10
[2020-10-23 18:43:51,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565254778]
[2020-10-23 18:43:51,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-23 18:43:51,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:43:51,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-23 18:43:51,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2020-10-23 18:43:51,227 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states.
[2020-10-23 18:43:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:43:51,595 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions.
[2020-10-23 18:43:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-10-23 18:43:51,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2020-10-23 18:43:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:43:51,596 INFO L225 Difference]: With dead ends: 25
[2020-10-23 18:43:51,597 INFO L226 Difference]: Without dead ends: 19
[2020-10-23 18:43:51,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240
[2020-10-23 18:43:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2020-10-23 18:43:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2020-10-23 18:43:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-10-23 18:43:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2020-10-23 18:43:51,604 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17
[2020-10-23 18:43:51,604 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:43:51,604 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2020-10-23 18:43:51,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-23 18:43:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2020-10-23 18:43:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-10-23 18:43:51,605 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:43:51,605 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:43:51,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2020-10-23 18:43:51,818 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:43:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:43:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -570933129, now seen corresponding path program 6 times
[2020-10-23 18:43:51,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:43:51,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952468481]
[2020-10-23 18:43:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:43:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 18:43:51,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 18:43:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 18:43:51,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 18:43:51,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-23 18:43:51,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 18:43:51,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-10-23 18:43:51,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:51 BoogieIcfgContainer
[2020-10-23 18:43:51,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 18:43:51,983 INFO L168 Benchmark]: Toolchain (without parser) took 5741.58 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 127.1 MB in the beginning and 128.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 42.8 MB. Max. memory is 8.0 GB.
[2020-10-23 18:43:51,985 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 18:43:51,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
[2020-10-23 18:43:51,988 INFO L168 Benchmark]: Boogie Preprocessor took 34.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 18:43:51,993 INFO L168 Benchmark]: RCFGBuilder took 358.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 104.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
[2020-10-23 18:43:51,994 INFO L168 Benchmark]: TraceAbstraction took 5070.38 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 103.7 MB in the beginning and 128.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB.
[2020-10-23 18:43:52,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.2 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 358.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 104.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 5070.38 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 103.7 MB in the beginning and 128.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L13] unsigned int x = 0;
[L14] unsigned int y = 1;
VAL [x=0, y=1]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=1, y=2]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=2, y=4]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=3, y=8]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=4, y=16]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=5, y=32]
[L16] COND TRUE x < 6
[L17] x++
[L18] y *= 2
VAL [x=6, y=64]
[L16] COND FALSE !(x < 6)
VAL [x=6, y=64]
[L21] CALL __VERIFIER_assert(y != 64)
VAL [\old(cond)=0]
[L6] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L7] CALL reach_error()
[L3] __assert_fail("0", "underapprox_1-1.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 45 SDslu, 159 SDs, 0 SdLazy, 251 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 8156 SizeOfPredicates, 5 NumberOfNonLiveVariables, 525 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 0/70 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 incorrect!
Received shutdown request...