/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/nla-digbench-scaling/divbin2_valuebound50.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:21:53,140 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:21:53,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:21:53,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:21:53,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:21:53,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:21:53,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:21:53,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:21:53,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:21:53,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 08:21:53,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 08:21:53,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 08:21:53,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 08:21:53,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:21:53,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:21:53,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:21:53,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:21:53,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:21:53,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:21:53,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:21:53,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:21:53,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:21:53,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:21:53,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 08:21:53,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-05-01 08:21:53,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-05-01 08:21:53,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-05-01 08:21:53,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-05-01 08:21:53,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-05-01 08:21:53,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-05-01 08:21:53,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-05-01 08:21:53,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-05-01 08:21:53,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-05-01 08:21:53,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-05-01 08:21:53,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-05-01 08:21:53,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-05-01 08:21:53,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-05-01 08:21:53,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-05-01 08:21:53,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-05-01 08:21:53,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-05-01 08:21:53,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:21:53,296 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 08:21:53,311 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:21:53,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:21:53,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:21:53,315 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:21:53,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:21:53,315 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:21:53,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:21:53,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:21:53,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:21:53,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:21:53,316 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:21:53,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:21:53,317 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:21:53,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:21:53,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:21:53,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:21:53,318 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:21:53,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:21:53,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:21:53,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:21:53,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:21:53,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:21:53,319 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:21:53,319 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:21:53,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:21:53,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:21:53,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:21:53,765 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:21:53,781 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:21:53,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i
[2021-05-01 08:21:53,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d05a9f4/38cfef6b8f2a4542a562f393c1778835/FLAGdf6f870b8
[2021-05-01 08:21:54,556 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:21:54,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i
[2021-05-01 08:21:54,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d05a9f4/38cfef6b8f2a4542a562f393c1778835/FLAGdf6f870b8
[2021-05-01 08:21:54,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d05a9f4/38cfef6b8f2a4542a562f393c1778835
[2021-05-01 08:21:54,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:21:54,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:21:54,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:21:54,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:21:54,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:21:54,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:21:54" (1/1) ...
[2021-05-01 08:21:54,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136e8e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:54, skipping insertion in model container
[2021-05-01 08:21:54,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:21:54" (1/1) ...
[2021-05-01 08:21:54,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:21:54,686 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:21:54,952 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i[959,972]
[2021-05-01 08:21:54,967 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:21:54,987 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:21:55,014 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound50.i[959,972]
[2021-05-01 08:21:55,027 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:21:55,114 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:21:55,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55 WrapperNode
[2021-05-01 08:21:55,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:21:55,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:21:55,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:21:55,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:21:55,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (1/1) ...
[2021-05-01 08:21:55,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:21:55,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:21:55,187 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:21:55,187 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:21:55,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (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 08:21:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:21:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:21:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:21:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:21:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:21:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:21:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:21:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:21:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-05-01 08:21:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-05-01 08:21:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:21:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:21:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 08:21:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:21:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:21:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:21:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:21:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:21:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:21:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:21:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:21:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:21:55,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:21:55,594 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:21:55,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:21:55 BoogieIcfgContainer
[2021-05-01 08:21:55,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:21:55,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:21:55,597 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:21:55,600 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:21:55,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:21:54" (1/3) ...
[2021-05-01 08:21:55,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3126d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:21:55, skipping insertion in model container
[2021-05-01 08:21:55,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:21:55" (2/3) ...
[2021-05-01 08:21:55,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3126d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:21:55, skipping insertion in model container
[2021-05-01 08:21:55,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:21:55" (3/3) ...
[2021-05-01 08:21:55,620 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound50.i
[2021-05-01 08:21:55,625 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:21:55,628 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:21:55,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:21:55,706 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:21:55,706 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:21:55,707 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:21:55,707 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:21:55,707 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:21:55,707 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:21:55,707 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:21:55,707 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:21:55,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-05-01 08:21:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-05-01 08:21:55,746 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:21:55,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:21:55,747 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:21:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:21:55,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1171333446, now seen corresponding path program 1 times
[2021-05-01 08:21:55,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:21:55,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654786338]
[2021-05-01 08:21:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:21:55,877 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:21:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:21:56,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:21:56,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:21:56,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:21:56,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:21:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:21:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:21:56,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:21:56,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:21:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:21:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:21:56,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:21:56,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:21:56,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:21:56,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:21:56,165 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 08:21:56,167 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:21:56,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654786338]
[2021-05-01 08:21:56,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1654786338] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:21:56,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:21:56,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:21:56,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525474516]
[2021-05-01 08:21:56,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:21:56,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:21:56,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:21:56,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:21:56,191 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-05-01 08:21:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:21:56,372 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions.
[2021-05-01 08:21:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:21:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2021-05-01 08:21:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:21:56,380 INFO L225 Difference]: With dead ends: 51
[2021-05-01 08:21:56,381 INFO L226 Difference]: Without dead ends: 25
[2021-05-01 08:21:56,384 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:21:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-05-01 08:21:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2021-05-01 08:21:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 08:21:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions.
[2021-05-01 08:21:56,428 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18
[2021-05-01 08:21:56,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:21:56,429 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions.
[2021-05-01 08:21:56,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-05-01 08:21:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions.
[2021-05-01 08:21:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-05-01 08:21:56,430 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:21:56,430 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:21:56,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:21:56,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:21:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:21:56,434 INFO L82 PathProgramCache]: Analyzing trace with hash -73515422, now seen corresponding path program 1 times
[2021-05-01 08:21:56,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:21:56,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145353647]
[2021-05-01 08:21:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:21:56,438 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:21:56,464 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:21:56,464 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:21:56,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:21:56,477 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:21:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:21:56 BoogieIcfgContainer
[2021-05-01 08:21:56,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:21:56,479 INFO L168 Benchmark]: Toolchain (without parser) took 1856.58 ms. Allocated memory is still 186.6 MB. Free memory was 152.3 MB in the beginning and 122.2 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,479 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 186.6 MB. Free memory is still 169.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.97 ms. Allocated memory is still 186.6 MB. Free memory was 152.0 MB in the beginning and 171.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,486 INFO L168 Benchmark]: Boogie Preprocessor took 70.17 ms. Allocated memory is still 186.6 MB. Free memory was 171.3 MB in the beginning and 169.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,487 INFO L168 Benchmark]: RCFGBuilder took 408.96 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 154.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,488 INFO L168 Benchmark]: TraceAbstraction took 880.60 ms. Allocated memory is still 186.6 MB. Free memory was 154.0 MB in the beginning and 122.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB.
[2021-05-01 08:21:56,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15 ms. Allocated memory is still 186.6 MB. Free memory is still 169.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 487.97 ms. Allocated memory is still 186.6 MB. Free memory was 152.0 MB in the beginning and 171.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 70.17 ms. Allocated memory is still 186.6 MB. Free memory was 171.3 MB in the beginning and 169.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 408.96 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 154.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 880.60 ms. Allocated memory is still 186.6 MB. Free memory was 154.0 MB in the beginning and 122.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L26] unsigned A, B;
[L27] unsigned q, r, b;
[L28] A = __VERIFIER_nondet_unsigned_int()
[L29] CALL assume_abort_if_not(A>=0 && A<=50)
[L16] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(A>=0 && A<=50)
[L30] B = 1
[L31] q = 0
[L32] r = A
[L33] b = B
[L34] COND TRUE 1
[L35] COND TRUE !(r >= b)
[L38] COND TRUE 1
[L39] CALL __VERIFIER_assert(A == q * b + r)
[L19] COND TRUE !(cond)
[L21] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 764.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 31.0ms, AutomataDifference: 208.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 20 SDslu, 3 SDs, 0 SdLazy, 6 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...