/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/divbin_valuebound1.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:22:00,675 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:22:00,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:22:00,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:22:00,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:22:00,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:22:00,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:22:00,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:22:00,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:22:00,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-05-01 08:22:00,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 08:22:00,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-05-01 08:22:00,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:22:00,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:22:00,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:22:00,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:22:00,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:22:00,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:22:00,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:22:00,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:22:00,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:22:00,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 08:22:00,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-05-01 08:22:00,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:22:00,749 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 08:22:00,770 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:22:00,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:22:00,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:22:00,772 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:22:00,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:22:00,774 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:22:00,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:22:00,774 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:22:00,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:22:00,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:22:00,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:22:00,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:22:00,775 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:22:00,775 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:22:01,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:22:01,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:22:01,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:22:01,100 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:22:01,100 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:22:01,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i
[2021-05-01 08:22:01,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8880d03c1/027685be17f1499aace047cc7353cb35/FLAG7729d24c0
[2021-05-01 08:22:01,643 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:22:01,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i
[2021-05-01 08:22:01,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8880d03c1/027685be17f1499aace047cc7353cb35/FLAG7729d24c0
[2021-05-01 08:22:01,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8880d03c1/027685be17f1499aace047cc7353cb35
[2021-05-01 08:22:01,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:22:01,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:22:01,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:22:01,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:22:01,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:22:01,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e895d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01, skipping insertion in model container
[2021-05-01 08:22:01,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:22:01,705 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:22:01,809 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/divbin_valuebound1.i[958,971]
[2021-05-01 08:22:01,819 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:22:01,825 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:22:01,845 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/divbin_valuebound1.i[958,971]
[2021-05-01 08:22:01,877 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:22:01,887 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:22:01,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01 WrapperNode
[2021-05-01 08:22:01,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:22:01,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:22:01,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:22:01,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:22:01,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (1/1) ...
[2021-05-01 08:22:01,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:22:01,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:22:01,931 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:22:01,931 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:22:01,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (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 08:22:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:22:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:22:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:22:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:22:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:22:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:22:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 08:22:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:22:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:22:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:22:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:22:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:22:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:22:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:22:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:22:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:22:02,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:22:02,268 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:22:02,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:02 BoogieIcfgContainer
[2021-05-01 08:22:02,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:22:02,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:22:02,270 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:22:02,272 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:22:02,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:22:01" (1/3) ...
[2021-05-01 08:22:02,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a691f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:02, skipping insertion in model container
[2021-05-01 08:22:02,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:01" (2/3) ...
[2021-05-01 08:22:02,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a691f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:02, skipping insertion in model container
[2021-05-01 08:22:02,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:02" (3/3) ...
[2021-05-01 08:22:02,274 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i
[2021-05-01 08:22:02,278 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:22:02,280 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:22:02,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:22:02,326 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:22:02,327 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:22:02,327 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:22:02,327 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:22:02,327 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:22:02,327 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:22:02,327 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:22:02,327 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:22:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-05-01 08:22:02,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-05-01 08:22:02,364 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:22:02,365 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:22:02,366 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:22:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:22:02,378 INFO L82 PathProgramCache]: Analyzing trace with hash 291922115, now seen corresponding path program 1 times
[2021-05-01 08:22:02,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:22:02,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536953443]
[2021-05-01 08:22:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:22:02,455 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:22:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:22:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:22:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:22:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:22:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2021-05-01 08:22:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:02,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:02,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-05-01 08:22:02,745 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:22:02,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536953443]
[2021-05-01 08:22:02,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1536953443] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:22:02,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:22:02,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:22:02,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846772459]
[2021-05-01 08:22:02,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:22:02,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:22:02,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:22:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:22:02,766 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:22:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:22:02,884 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions.
[2021-05-01 08:22:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:22:02,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34
[2021-05-01 08:22:02,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:22:02,893 INFO L225 Difference]: With dead ends: 61
[2021-05-01 08:22:02,893 INFO L226 Difference]: Without dead ends: 29
[2021-05-01 08:22:02,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:22:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-05-01 08:22:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2021-05-01 08:22:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-05-01 08:22:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions.
[2021-05-01 08:22:02,936 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34
[2021-05-01 08:22:02,936 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:22:02,937 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions.
[2021-05-01 08:22:02,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:22:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions.
[2021-05-01 08:22:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2021-05-01 08:22:02,939 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:22:02,939 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:22:02,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:22:02,939 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:22:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:22:02,940 INFO L82 PathProgramCache]: Analyzing trace with hash -245963777, now seen corresponding path program 1 times
[2021-05-01 08:22:02,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:22:02,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715443175]
[2021-05-01 08:22:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:22:02,944 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:22:02,960 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:22:02,960 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:22:02,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:22:02,977 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:22:02,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:22:02 BoogieIcfgContainer
[2021-05-01 08:22:02,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:22:02,979 INFO L168 Benchmark]: Toolchain (without parser) took 1299.83 ms. Allocated memory is still 178.3 MB. Free memory was 144.2 MB in the beginning and 153.5 MB in the end (delta: -9.3 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,979 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory was 161.0 MB in the beginning and 160.9 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.07 ms. Allocated memory is still 178.3 MB. Free memory was 144.0 MB in the beginning and 161.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,980 INFO L168 Benchmark]: Boogie Preprocessor took 36.97 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 160.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,981 INFO L168 Benchmark]: RCFGBuilder took 338.02 ms. Allocated memory is still 178.3 MB. Free memory was 160.0 MB in the beginning and 144.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,981 INFO L168 Benchmark]: TraceAbstraction took 707.29 ms. Allocated memory is still 178.3 MB. Free memory was 143.9 MB in the beginning and 153.5 MB in the end (delta: -9.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:02,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory was 161.0 MB in the beginning and 160.9 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 212.07 ms. Allocated memory is still 178.3 MB. Free memory was 144.0 MB in the beginning and 161.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 36.97 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 160.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 338.02 ms. Allocated memory is still 178.3 MB. Free memory was 160.0 MB in the beginning and 144.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 707.29 ms. Allocated memory is still 178.3 MB. Free memory was 143.9 MB in the beginning and 153.5 MB in the end (delta: -9.6 MB). There was no memory consumed. 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<=1)
[L16] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(A>=0 && A<=1)
[L30] B = __VERIFIER_nondet_unsigned_int()
[L31] CALL assume_abort_if_not(B>=0 && B<=1)
[L16] COND FALSE !(!cond)
[L31] RET assume_abort_if_not(B>=0 && B<=1)
[L32] CALL assume_abort_if_not(B < (0x7fffffff * 2U + 1U)/2)
[L16] COND FALSE !(!cond)
[L32] RET assume_abort_if_not(B < (0x7fffffff * 2U + 1U)/2)
[L33] CALL assume_abort_if_not(B >= 1)
[L16] COND FALSE !(!cond)
[L33] RET assume_abort_if_not(B >= 1)
[L34] q = 0
[L35] r = A
[L36] b = B
[L37] COND TRUE 1
[L38] COND TRUE !(r >= b)
[L41] COND TRUE 1
[L42] CALL __VERIFIER_assert(A == q * b + r)
[L19] COND TRUE !(cond)
[L21] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 641.5ms, OverallIterations: 2, TraceHistogramMax: 4, EmptinessCheckTime: 23.6ms, AutomataDifference: 142.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 21 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 26.4ms 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...