/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s1liff.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-07 01:56:35,861 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-07 01:56:35,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-07 01:56:35,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-07 01:56:35,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-07 01:56:35,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-07 01:56:35,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-07 01:56:35,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-07 01:56:35,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-07 01:56:35,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-07 01:56:35,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
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[2020-11-07 01:56:35,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-07 01:56:35,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2020-11-07 01:56:35,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-07 01:56:35,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-07 01:56:35,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-07 01:56:35,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-07 01:56:35,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-07 01:56:35,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-07 01:56:35,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-07 01:56:35,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-07 01:56:35,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-07 01:56:36,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-11-07 01:56:36,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-07 01:56:36,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-11-07 01:56:36,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-07 01:56:36,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-07 01:56:36,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-11-07 01:56:36,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2020-11-07 01:56:36,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-07 01:56:36,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-07 01:56:36,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-11-07 01:56:36,029 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-07 01:56:36,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-07 01:56:36,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-07 01:56:36,035 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-07 01:56:36,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-07 01:56:36,036 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-07 01:56:36,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-07 01:56:36,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-07 01:56:36,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-07 01:56:36,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-07 01:56:36,038 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-07 01:56:36,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-07 01:56:36,038 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-07 01:56:36,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-07 01:56:36,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-07 01:56:36,039 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-11-07 01:56:36,039 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-07 01:56:36,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-07 01:56:36,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 01:56:36,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-07 01:56:36,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-11-07 01:56:36,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-07 01:56:36,040 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-07 01:56:36,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-07 01:56:36,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-07 01:56:36,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-07 01:56:36,459 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-07 01:56:36,460 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-07 01:56:36,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c
[2020-11-07 01:56:36,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641878460/6f573f4929a842cd86b2d1ac50fd282b/FLAG4c602cf90
[2020-11-07 01:56:37,083 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-07 01:56:37,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c
[2020-11-07 01:56:37,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641878460/6f573f4929a842cd86b2d1ac50fd282b/FLAG4c602cf90
[2020-11-07 01:56:37,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641878460/6f573f4929a842cd86b2d1ac50fd282b
[2020-11-07 01:56:37,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-07 01:56:37,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-07 01:56:37,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-07 01:56:37,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-07 01:56:37,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-07 01:56:37,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ef5d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37, skipping insertion in model container
[2020-11-07 01:56:37,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-07 01:56:37,491 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-07 01:56:37,721 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 01:56:37,731 INFO L203 MainTranslator]: Completed pre-run
[2020-11-07 01:56:37,756 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 01:56:37,775 INFO L208 MainTranslator]: Completed translation
[2020-11-07 01:56:37,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37 WrapperNode
[2020-11-07 01:56:37,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-07 01:56:37,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-07 01:56:37,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-07 01:56:37,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-07 01:56:37,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ...
[2020-11-07 01:56:37,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-07 01:56:37,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-07 01:56:37,822 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-07 01:56:37,822 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-07 01:56:37,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (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
[2020-11-07 01:56:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-07 01:56:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-07 01:56:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-07 01:56:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-07 01:56:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-11-07 01:56:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-07 01:56:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-07 01:56:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-07 01:56:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-07 01:56:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-07 01:56:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-07 01:56:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-07 01:56:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-07 01:56:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-11-07 01:56:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-07 01:56:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-07 01:56:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-07 01:56:38,442 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-07 01:56:38,443 INFO L298 CfgBuilder]: Removed 3 assume(true) statements.
[2020-11-07 01:56:38,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:38 BoogieIcfgContainer
[2020-11-07 01:56:38,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-07 01:56:38,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-07 01:56:38,451 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-07 01:56:38,456 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-07 01:56:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:37" (1/3) ...
[2020-11-07 01:56:38,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4990d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:38, skipping insertion in model container
[2020-11-07 01:56:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (2/3) ...
[2020-11-07 01:56:38,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4990d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:38, skipping insertion in model container
[2020-11-07 01:56:38,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:38" (3/3) ...
[2020-11-07 01:56:38,460 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c
[2020-11-07 01:56:38,476 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-07 01:56:38,481 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-07 01:56:38,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-07 01:56:38,516 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-07 01:56:38,516 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-07 01:56:38,516 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-11-07 01:56:38,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-07 01:56:38,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-07 01:56:38,517 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-07 01:56:38,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-07 01:56:38,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-07 01:56:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states.
[2020-11-07 01:56:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-11-07 01:56:38,546 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 01:56:38,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 01:56:38,547 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 01:56:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 01:56:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1165353355, now seen corresponding path program 1 times
[2020-11-07 01:56:38,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 01:56:38,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119539866]
[2020-11-07 01:56:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 01:56:38,644 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 01:56:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 01:56:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-11-07 01:56:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 01:56:39,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119539866]
[2020-11-07 01:56:39,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 01:56:39,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-11-07 01:56:39,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692568770]
[2020-11-07 01:56:39,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-11-07 01:56:39,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 01:56:39,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-11-07 01:56:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-07 01:56:39,064 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states.
[2020-11-07 01:56:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 01:56:39,356 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions.
[2020-11-07 01:56:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-11-07 01:56:39,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39
[2020-11-07 01:56:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 01:56:39,370 INFO L225 Difference]: With dead ends: 135
[2020-11-07 01:56:39,371 INFO L226 Difference]: Without dead ends: 65
[2020-11-07 01:56:39,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-07 01:56:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2020-11-07 01:56:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2020-11-07 01:56:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-11-07 01:56:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions.
[2020-11-07 01:56:39,475 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 39
[2020-11-07 01:56:39,476 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-07 01:56:39,477 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions.
[2020-11-07 01:56:39,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-11-07 01:56:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions.
[2020-11-07 01:56:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-11-07 01:56:39,481 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 01:56:39,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 01:56:39,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-07 01:56:39,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 01:56:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 01:56:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1782259906, now seen corresponding path program 1 times
[2020-11-07 01:56:39,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 01:56:39,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677383329]
[2020-11-07 01:56:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 01:56:39,498 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 01:56:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 01:56:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-11-07 01:56:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 01:56:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 01:56:39,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677383329]
[2020-11-07 01:56:39,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 01:56:39,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-11-07 01:56:39,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560820648]
[2020-11-07 01:56:39,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-11-07 01:56:39,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 01:56:39,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-11-07 01:56:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-11-07 01:56:39,670 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 5 states.
[2020-11-07 01:56:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 01:56:39,976 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions.
[2020-11-07 01:56:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-11-07 01:56:39,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39
[2020-11-07 01:56:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 01:56:39,982 INFO L225 Difference]: With dead ends: 122
[2020-11-07 01:56:39,982 INFO L226 Difference]: Without dead ends: 90
[2020-11-07 01:56:39,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-11-07 01:56:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-11-07 01:56:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68.
[2020-11-07 01:56:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-11-07 01:56:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions.
[2020-11-07 01:56:40,017 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 39
[2020-11-07 01:56:40,019 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-07 01:56:40,020 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions.
[2020-11-07 01:56:40,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-11-07 01:56:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions.
[2020-11-07 01:56:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-11-07 01:56:40,022 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 01:56:40,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 01:56:40,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-07 01:56:40,024 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 01:56:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 01:56:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1725322241, now seen corresponding path program 1 times
[2020-11-07 01:56:40,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 01:56:40,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265642793]
[2020-11-07 01:56:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 01:56:40,083 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-11-07 01:56:40,085 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 01:56:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-07 01:56:40,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-07 01:56:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-07 01:56:40,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-07 01:56:40,281 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-11-07 01:56:40,283 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-11-07 01:56:40,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-11-07 01:56:40,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:40 BoogieIcfgContainer
[2020-11-07 01:56:40,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-07 01:56:40,320 INFO L168 Benchmark]: Toolchain (without parser) took 2879.62 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.7 MB in the beginning and 141.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,322 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,325 INFO L168 Benchmark]: Boogie Preprocessor took 44.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,327 INFO L168 Benchmark]: RCFGBuilder took 623.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 129.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,328 INFO L168 Benchmark]: TraceAbstraction took 1863.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.1 MB in the beginning and 141.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:40,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 328.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 44.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 623.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 129.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1863.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.1 MB in the beginning and 141.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long sum[1];
[L29] int *a = malloc(sizeof(int)*N);
[L31] sum[0] = N
[L32] i=0
[L32] COND TRUE i<N
[L34] a[i] = 1
[L32] i++
[L32] COND FALSE !(i<N)
[L37] i=0
[L37] COND TRUE i<N
[L39] EXPR a[i]
[L39] COND TRUE a[i] == 1
[L40] EXPR a[i]
[L40] a[i] = a[i] + 1
[L37] i++
[L37] COND FALSE !(i<N)
[L46] i=0
[L46] COND TRUE i<N
[L48] EXPR sum[0]
[L48] EXPR a[i]
[L48] sum[0] = sum[0] + a[i]
[L46] i++
[L46] COND FALSE !(i<N)
[L51] EXPR sum[0]
[L51] CALL __VERIFIER_assert(sum[0] == 2*N)
[L15] COND TRUE !(cond)
[L15] CALL reach_error()
[L10] __assert_fail("0", "s1liff.c", 10, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 110 SDslu, 37 SDs, 0 SdLazy, 169 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 22 StatesRemovedByMinimization, 1 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 proved your program to be incorrect!
Received shutdown request...