/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/prod4br-ll_valuebound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:24:47,332 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:24:47,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:24:47,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:24:47,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:24:47,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:24:47,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:24:47,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-05-01 08:24:47,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2021-05-01 08:24:47,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:24:47,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:24:47,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:24:47,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:24:47,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:24:47,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:24:47,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:24:47,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:24:47,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:24:47,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:24:47,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 08:24:47,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-05-01 08:24:47,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:24:47,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:24:47,409 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 08:24:47,424 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:24:47,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:24:47,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:24:47,426 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:24:47,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:24:47,441 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:24:47,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:24:47,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:24:47,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:24:47,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:24:47,445 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:24:47,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:24:47,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:24:47,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:24:47,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:24:47,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:24:47,446 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:24:47,446 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:24:47,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:24:47,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:24:47,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:24:47,779 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:24:47,780 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:24:47,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c
[2021-05-01 08:24:47,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc557521/d6f335fcad0f4c7d929353c29faa99d5/FLAGab9b4a610
[2021-05-01 08:24:48,316 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:24:48,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound100.c
[2021-05-01 08:24:48,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc557521/d6f335fcad0f4c7d929353c29faa99d5/FLAGab9b4a610
[2021-05-01 08:24:48,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc557521/d6f335fcad0f4c7d929353c29faa99d5
[2021-05-01 08:24:48,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:24:48,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:24:48,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:48,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:24:48,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:24:48,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408e8bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48, skipping insertion in model container
[2021-05-01 08:24:48,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:24:48,397 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:24:48,561 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/prod4br-ll_valuebound100.c[524,537]
[2021-05-01 08:24:48,589 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:48,596 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:24:48,654 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/prod4br-ll_valuebound100.c[524,537]
[2021-05-01 08:24:48,666 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:48,680 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:24:48,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48 WrapperNode
[2021-05-01 08:24:48,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:48,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:24:48,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:24:48,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:24:48,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (1/1) ...
[2021-05-01 08:24:48,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:24:48,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:24:48,724 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:24:48,724 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:24:48,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (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 08:24:48,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:24:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:24:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:24:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:24:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:24:48,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:24:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:24:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:24:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:24:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:24:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 08:24:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:24:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:24:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:24:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:24:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:24:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:24:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:24:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:24:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:24:49,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:24:49,163 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 08:24:49,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:49 BoogieIcfgContainer
[2021-05-01 08:24:49,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:24:49,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:24:49,166 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:24:49,169 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:24:49,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:24:48" (1/3) ...
[2021-05-01 08:24:49,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970aa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:49, skipping insertion in model container
[2021-05-01 08:24:49,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:48" (2/3) ...
[2021-05-01 08:24:49,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1970aa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:49, skipping insertion in model container
[2021-05-01 08:24:49,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:49" (3/3) ...
[2021-05-01 08:24:49,171 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound100.c
[2021-05-01 08:24:49,176 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:24:49,179 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:24:49,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:24:49,211 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:24:49,211 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:24:49,211 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:24:49,211 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:24:49,211 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:24:49,211 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:24:49,211 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:24:49,211 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:24:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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 08:24:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:49,241 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:49,242 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:49,242 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1738134960, now seen corresponding path program 1 times
[2021-05-01 08:24:49,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:49,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398498242]
[2021-05-01 08:24:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:49,318 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:49,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:49,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:49,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:49,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:49,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-05-01 08:24:49,510 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:49,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398498242]
[2021-05-01 08:24:49,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398498242] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:49,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:49,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:24:49,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819928044]
[2021-05-01 08:24:49,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:24:49,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:24:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:49,527 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:24:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:49,618 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions.
[2021-05-01 08:24:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:24:49,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2021-05-01 08:24:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:49,626 INFO L225 Difference]: With dead ends: 61
[2021-05-01 08:24:49,627 INFO L226 Difference]: Without dead ends: 29
[2021-05-01 08:24:49,633 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-05-01 08:24:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2021-05-01 08:24:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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 08:24:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions.
[2021-05-01 08:24:49,685 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 28
[2021-05-01 08:24:49,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:49,686 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions.
[2021-05-01 08:24:49,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:24:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions.
[2021-05-01 08:24:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:49,687 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:49,688 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:49,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:24:49,688 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash 567203544, now seen corresponding path program 1 times
[2021-05-01 08:24:49,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:49,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526760406]
[2021-05-01 08:24:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:49,692 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:49,724 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:24:49,724 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:24:49,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:24:49,744 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:24:49,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:24:49 BoogieIcfgContainer
[2021-05-01 08:24:49,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:24:49,748 INFO L168 Benchmark]: Toolchain (without parser) took 1383.81 ms. Allocated memory is still 189.8 MB. Free memory was 154.6 MB in the beginning and 169.3 MB in the end (delta: -14.7 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,749 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.99 ms. Allocated memory is still 189.8 MB. Free memory was 154.4 MB in the beginning and 172.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,750 INFO L168 Benchmark]: Boogie Preprocessor took 41.06 ms. Allocated memory is still 189.8 MB. Free memory was 172.9 MB in the beginning and 171.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,751 INFO L168 Benchmark]: RCFGBuilder took 440.96 ms. Allocated memory is still 189.8 MB. Free memory was 171.3 MB in the beginning and 154.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,752 INFO L168 Benchmark]: TraceAbstraction took 579.26 ms. Allocated memory is still 189.8 MB. Free memory was 154.5 MB in the beginning and 169.3 MB in the end (delta: -14.8 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:24:49,758 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 189.8 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 314.99 ms. Allocated memory is still 189.8 MB. Free memory was 154.4 MB in the beginning and 172.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 41.06 ms. Allocated memory is still 189.8 MB. Free memory was 172.9 MB in the beginning and 171.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 440.96 ms. Allocated memory is still 189.8 MB. Free memory was 171.3 MB in the beginning and 154.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 579.26 ms. Allocated memory is still 189.8 MB. Free memory was 154.5 MB in the beginning and 169.3 MB in the end (delta: -14.8 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 14]: 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:
[L20] int x, y;
[L21] long long a, b, p, q;
[L23] x = __VERIFIER_nondet_int()
[L24] CALL assume_abort_if_not(x>=0 && x<=100)
[L9] COND FALSE !(!cond)
[L24] RET assume_abort_if_not(x>=0 && x<=100)
[L25] y = __VERIFIER_nondet_int()
[L26] CALL assume_abort_if_not(y>=0 && y<=100)
[L9] COND FALSE !(!cond)
[L26] RET assume_abort_if_not(y>=0 && y<=100)
[L27] CALL assume_abort_if_not(y >= 1)
[L9] COND FALSE !(!cond)
[L27] RET assume_abort_if_not(y >= 1)
[L29] a = x
[L30] b = y
[L31] p = 1
[L32] q = 0
[L34] COND TRUE 1
[L35] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y)
[L12] COND TRUE !(cond)
[L14] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 519.6ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 20.8ms, AutomataDifference: 112.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 22 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms 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: 27.0ms 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...