/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/sqmf.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-21 21:17:09,135 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-21 21:17:09,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 21:17:09,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 21:17:09,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 21:17:09,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-21 21:17:09,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-02-21 21:17:09,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-21 21:17:09,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-21 21:17:09,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-21 21:17:09,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-21 21:17:09,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-21 21:17:09,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 21:17:09,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 21:17:09,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 21:17:09,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 21:17:09,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-21 21:17:09,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-21 21:17:09,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 21:17:09,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 21:17:09,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-02-21 21:17:09,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-21 21:17:09,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-21 21:17:09,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2021-02-21 21:17:09,263 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-21 21:17:09,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 21:17:09,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 21:17:09,267 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-21 21:17:09,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-21 21:17:09,268 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-21 21:17:09,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-21 21:17:09,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 21:17:09,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 21:17:09,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 21:17:09,270 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-21 21:17:09,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-21 21:17:09,270 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-21 21:17:09,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-21 21:17:09,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 21:17:09,271 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-21 21:17:09,271 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-21 21:17:09,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-21 21:17:09,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 21:17:09,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 21:17:09,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-21 21:17:09,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 21:17:09,272 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 21:17:09,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 21:17:09,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 21:17:09,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 21:17:09,708 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-21 21:17:09,709 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-21 21:17:09,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c
[2021-02-21 21:17:09,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed69e367/44da4170c23547f79237932f5a63a5c4/FLAGb205ed9ba
[2021-02-21 21:17:10,416 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-21 21:17:10,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c
[2021-02-21 21:17:10,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed69e367/44da4170c23547f79237932f5a63a5c4/FLAGb205ed9ba
[2021-02-21 21:17:10,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed69e367/44da4170c23547f79237932f5a63a5c4
[2021-02-21 21:17:10,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 21:17:10,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 21:17:10,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 21:17:10,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 21:17:10,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 21:17:10,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:10" (1/1) ...
[2021-02-21 21:17:10,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73608155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:10, skipping insertion in model container
[2021-02-21 21:17:10,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:10" (1/1) ...
[2021-02-21 21:17:10,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-21 21:17:10,829 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-21 21:17:11,047 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c[587,600]
[2021-02-21 21:17:11,080 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 21:17:11,095 INFO L203 MainTranslator]: Completed pre-run
[2021-02-21 21:17:11,115 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c[587,600]
[2021-02-21 21:17:11,134 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 21:17:11,153 INFO L208 MainTranslator]: Completed translation
[2021-02-21 21:17:11,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11 WrapperNode
[2021-02-21 21:17:11,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 21:17:11,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 21:17:11,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 21:17:11,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 21:17:11,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (1/1) ...
[2021-02-21 21:17:11,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 21:17:11,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 21:17:11,198 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 21:17:11,198 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-21 21:17:11,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (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
[2021-02-21 21:17:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 21:17:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 21:17:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 21:17:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-02-21 21:17:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-21 21:17:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 21:17:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-21 21:17:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-21 21:17:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2021-02-21 21:17:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-21 21:17:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-02-21 21:17:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 21:17:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 21:17:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 21:17:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 21:17:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 21:17:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 21:17:11,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 21:17:11,871 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-02-21 21:17:11,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:11 BoogieIcfgContainer
[2021-02-21 21:17:11,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 21:17:11,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 21:17:11,875 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 21:17:11,878 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-21 21:17:11,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:10" (1/3) ...
[2021-02-21 21:17:11,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9ae55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:11, skipping insertion in model container
[2021-02-21 21:17:11,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:11" (2/3) ...
[2021-02-21 21:17:11,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9ae55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:11, skipping insertion in model container
[2021-02-21 21:17:11,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:11" (3/3) ...
[2021-02-21 21:17:11,882 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c
[2021-02-21 21:17:11,889 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-21 21:17:11,894 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 21:17:11,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 21:17:11,935 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-21 21:17:11,936 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-21 21:17:11,936 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-21 21:17:11,936 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 21:17:11,936 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 21:17:11,936 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-21 21:17:11,936 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 21:17:11,937 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 21:17:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states.
[2021-02-21 21:17:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-02-21 21:17:11,963 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 21:17:11,963 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]
[2021-02-21 21:17:11,964 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 21:17:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 21:17:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash 391504425, now seen corresponding path program 1 times
[2021-02-21 21:17:11,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-21 21:17:11,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009640404]
[2021-02-21 21:17:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 21:17:12,052 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-21 21:17:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 21:17:12,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 21:17:12,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 21:17:12,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 21:17:12,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 21:17:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 21:17:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 21:17:12,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 21:17:12,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 21:17:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2021-02-21 21:17:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 21:17:12,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 21:17:12,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 21:17:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 21:17:12,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009640404]
[2021-02-21 21:17:12,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 21:17:12,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-21 21:17:12,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109820327]
[2021-02-21 21:17:12,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-21 21:17:12,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-21 21:17:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-21 21:17:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-21 21:17:12,398 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states.
[2021-02-21 21:17:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 21:17:12,635 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions.
[2021-02-21 21:17:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-21 21:17:12,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2021-02-21 21:17:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 21:17:12,646 INFO L225 Difference]: With dead ends: 122
[2021-02-21 21:17:12,646 INFO L226 Difference]: Without dead ends: 68
[2021-02-21 21:17:12,650 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
[2021-02-21 21:17:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2021-02-21 21:17:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2021-02-21 21:17:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2021-02-21 21:17:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions.
[2021-02-21 21:17:12,704 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 47
[2021-02-21 21:17:12,704 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 21:17:12,705 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions.
[2021-02-21 21:17:12,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-21 21:17:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions.
[2021-02-21 21:17:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-02-21 21:17:12,707 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 21:17:12,708 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]
[2021-02-21 21:17:12,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-21 21:17:12,708 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 21:17:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 21:17:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash -790193450, now seen corresponding path program 1 times
[2021-02-21 21:17:12,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-21 21:17:12,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847505012]
[2021-02-21 21:17:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 21:17:12,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-21 21:17:12,744 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-02-21 21:17:12,744 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-21 21:17:12,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-21 21:17:12,765 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-02-21 21:17:12,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:12 BoogieIcfgContainer
[2021-02-21 21:17:12,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 21:17:12,768 INFO L168 Benchmark]: Toolchain (without parser) took 1995.54 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 85.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,769 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 100.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 120.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,771 INFO L168 Benchmark]: Boogie Preprocessor took 41.94 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,772 INFO L168 Benchmark]: RCFGBuilder took 675.41 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 136.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,773 INFO L168 Benchmark]: TraceAbstraction took 891.38 ms. Allocated memory is still 155.2 MB. Free memory was 135.4 MB in the beginning and 85.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB.
[2021-02-21 21:17:12,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 100.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 120.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 41.94 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 675.41 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 136.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 891.38 ms. Allocated memory is still 155.2 MB. Free memory was 135.4 MB in the beginning and 85.1 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 15]: 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:
[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 *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] b[0] = 0
[L32] a[0] = 0
[L34] i=1
[L34] COND FALSE !(i<N)
[L39] i=1
[L39] COND FALSE !(i<N)
[L44] i=0
[L44] COND TRUE i<N
[L46] EXPR a[i]
[L46] CALL __VERIFIER_assert(a[i] == (i+1)*(i+1))
[L15] COND TRUE !(cond)
[L15] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 10 SDslu, 5 SDs, 0 SdLazy, 59 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 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...