/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:13:44,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:13:44,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:13:44,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:13:44,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:13:44,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:13:44,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:13:44,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:13:44,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:13:44,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:13:44,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:13:44,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:13:44,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:13:44,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:13:44,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:13:44,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:13:44,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:13:44,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:13:44,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:13:44,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:13:44,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:13:44,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:13:44,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:13:44,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:13:44,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:13:44,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:13:44,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:13:44,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:13:44,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 17:13:44,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:13:44,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:13:44,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:13:44,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:13:44,335 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:13:44,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:13:44,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:13:44,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:13:44,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:13:44,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:13:44,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:13:44,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:13:44,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:13:44,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:13:44,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:13:44,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:13:44,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:13:44,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:13:44,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:13:44,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:13:44,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:13:44,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:13:44,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:13:44,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:13:44,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:13:44,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:13:44,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:44,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:13:44,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:13:44,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 17:13:44,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:13:44,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:13:44,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:13:44,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:13:44,691 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:13:44,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 17:13:44,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf9274dc/0e1acbf398994c25ae5f9e9d821ef2a6/FLAG3f71a4b9f [2020-07-21 17:13:45,260 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:13:45,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 17:13:45,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf9274dc/0e1acbf398994c25ae5f9e9d821ef2a6/FLAG3f71a4b9f [2020-07-21 17:13:45,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf9274dc/0e1acbf398994c25ae5f9e9d821ef2a6 [2020-07-21 17:13:45,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:13:45,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:13:45,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:13:45,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:13:45,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:13:45,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2723a77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45, skipping insertion in model container [2020-07-21 17:13:45,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:13:45,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:13:45,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:13:45,833 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:13:45,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:13:45,871 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:13:45,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45 WrapperNode [2020-07-21 17:13:45,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:13:45,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:13:45,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:13:45,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:13:45,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:45,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:46,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:46,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (1/1) ... [2020-07-21 17:13:46,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:13:46,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:13:46,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:13:46,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:13:46,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (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 [2020-07-21 17:13:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:13:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:13:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:13:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:13:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:13:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:13:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:13:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:13:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:13:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:13:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:13:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:13:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:13:46,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:13:46,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:13:46,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:13:46 BoogieIcfgContainer [2020-07-21 17:13:46,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:13:46,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:13:46,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:13:46,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:13:46,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:13:45" (1/3) ... [2020-07-21 17:13:46,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c12e657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:13:46, skipping insertion in model container [2020-07-21 17:13:46,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:45" (2/3) ... [2020-07-21 17:13:46,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c12e657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:13:46, skipping insertion in model container [2020-07-21 17:13:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:13:46" (3/3) ... [2020-07-21 17:13:46,321 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 17:13:46,333 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:13:46,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:13:46,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:13:46,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:13:46,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:13:46,422 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:13:46,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:13:46,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:13:46,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:13:46,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:13:46,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:13:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 17:13:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 17:13:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:13:46,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:13:46,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:13:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:13:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 17:13:46,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:13:46,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557059470] [2020-07-21 17:13:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:46,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:13:46,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:13:46,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 17:13:46,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:13:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:13:46,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:13:46,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557059470] [2020-07-21 17:13:46,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:13:46,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 17:13:46,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210012445] [2020-07-21 17:13:46,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 17:13:46,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:13:46,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 17:13:46,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 17:13:46,641 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-21 17:13:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:13:46,665 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-21 17:13:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 17:13:46,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 17:13:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:13:46,676 INFO L225 Difference]: With dead ends: 35 [2020-07-21 17:13:46,676 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 17:13:46,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 17:13:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 17:13:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 17:13:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 17:13:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 17:13:46,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 17:13:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:13:46,721 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 17:13:46,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 17:13:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 17:13:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 17:13:46,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:13:46,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:13:46,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:46,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:13:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:13:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-07-21 17:13:46,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:13:46,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845650452] [2020-07-21 17:13:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:46,979 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:13:46,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:13:46,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 17:13:46,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:13:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:13:47,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:13:47,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845650452] [2020-07-21 17:13:47,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:13:47,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 17:13:47,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895866137] [2020-07-21 17:13:47,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 17:13:47,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:13:47,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 17:13:47,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 17:13:47,094 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-21 17:13:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:13:47,188 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-21 17:13:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 17:13:47,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 17:13:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:13:47,192 INFO L225 Difference]: With dead ends: 30 [2020-07-21 17:13:47,193 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 17:13:47,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 17:13:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 17:13:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 17:13:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 17:13:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 17:13:47,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 17:13:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:13:47,202 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 17:13:47,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 17:13:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 17:13:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 17:13:47,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:13:47,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:13:47,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:47,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:13:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:13:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 17:13:47,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:13:47,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699719105] [2020-07-21 17:13:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:47,460 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:13:47,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:13:47,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 17:13:47,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:13:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:13:47,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:13:47,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:13:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:13:54,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699719105] [2020-07-21 17:13:54,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:13:54,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 17:13:54,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435131438] [2020-07-21 17:13:54,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 17:13:54,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:13:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 17:13:54,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=134, Unknown=2, NotChecked=0, Total=182 [2020-07-21 17:13:54,651 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 17:13:57,961 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 10 [2020-07-21 17:14:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:02,205 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 17:14:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 17:14:02,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 17:14:02,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:02,206 INFO L225 Difference]: With dead ends: 37 [2020-07-21 17:14:02,206 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 17:14:02,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=60, Invalid=178, Unknown=2, NotChecked=0, Total=240 [2020-07-21 17:14:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 17:14:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 17:14:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 17:14:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 17:14:02,219 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 17:14:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:02,219 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 17:14:02,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 17:14:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 17:14:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 17:14:02,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:02,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:02,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:02,428 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:02,429 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 17:14:02,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:02,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615944485] [2020-07-21 17:14:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:02,464 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:02,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:02,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 17:14:02,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:02,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:06,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615944485] [2020-07-21 17:14:06,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:06,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-07-21 17:14:06,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925254015] [2020-07-21 17:14:06,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 17:14:06,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:06,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 17:14:06,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=46, Unknown=2, NotChecked=0, Total=72 [2020-07-21 17:14:06,829 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2020-07-21 17:14:09,024 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_main_~n~0 4294967296))) (and (let ((.cse1 (+ c_main_~l~0 2))) (or (<= .cse0 (mod .cse1 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 3) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 1))) (or (< 0 (mod (mod (mod .cse2 4294967296) 3) 4294967296)) (<= .cse0 (mod .cse2 4294967296)))))) is different from false [2020-07-21 17:14:17,416 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (< 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (<= (mod c_main_~n~0 4294967296) (mod .cse0 4294967296))))) is different from false [2020-07-21 17:14:21,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:21,643 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-07-21 17:14:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 17:14:21,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-07-21 17:14:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:21,647 INFO L225 Difference]: With dead ends: 48 [2020-07-21 17:14:21,647 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 17:14:21,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=28, Invalid=48, Unknown=4, NotChecked=30, Total=110 [2020-07-21 17:14:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 17:14:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-07-21 17:14:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 17:14:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-21 17:14:21,665 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2020-07-21 17:14:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:21,668 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-21 17:14:21,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 17:14:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-21 17:14:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 17:14:21,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:21,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:21,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:21,874 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:21,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-07-21 17:14:21,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:21,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177161063] [2020-07-21 17:14:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:21,919 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:21,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:21,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 17:14:21,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:22,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:22,141 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:55,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177161063] [2020-07-21 17:14:55,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:55,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-21 17:14:55,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873755538] [2020-07-21 17:14:55,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 17:14:55,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 17:14:55,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=228, Unknown=15, NotChecked=0, Total=306 [2020-07-21 17:14:55,710 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 18 states. [2020-07-21 17:15:06,325 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 17:16:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:16:15,111 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-07-21 17:16:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 17:16:15,194 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-07-21 17:16:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:16:15,196 INFO L225 Difference]: With dead ends: 68 [2020-07-21 17:16:15,196 INFO L226 Difference]: Without dead ends: 51 [2020-07-21 17:16:15,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=75, Invalid=287, Unknown=18, NotChecked=0, Total=380 [2020-07-21 17:16:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-21 17:16:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2020-07-21 17:16:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 17:16:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-07-21 17:16:15,205 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 23 [2020-07-21 17:16:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:16:15,206 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-07-21 17:16:15,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 17:16:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-07-21 17:16:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 17:16:15,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:16:15,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:16:15,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:15,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:16:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:16:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1031065109, now seen corresponding path program 2 times [2020-07-21 17:16:15,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:16:15,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154827936] [2020-07-21 17:16:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:15,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:16:15,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:16:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 17:16:15,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:16:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:16:15,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:16:15,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:17:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 28 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 17:17:33,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154827936] [2020-07-21 17:17:33,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:17:33,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2020-07-21 17:17:33,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963887349] [2020-07-21 17:17:33,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 17:17:33,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:17:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 17:17:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=420, Unknown=25, NotChecked=0, Total=552 [2020-07-21 17:17:33,249 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 24 states. [2020-07-21 17:17:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:17:50,157 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-07-21 17:17:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 17:17:50,157 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 29 [2020-07-21 17:17:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:17:50,158 INFO L225 Difference]: With dead ends: 63 [2020-07-21 17:17:50,158 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 17:17:50,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=111, Invalid=464, Unknown=25, NotChecked=0, Total=600 [2020-07-21 17:17:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 17:17:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 17:17:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 17:17:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 17:17:50,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-07-21 17:17:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:17:50,161 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 17:17:50,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 17:17:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 17:17:50,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 17:17:50,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:17:50,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 17:18:05,086 WARN L193 SmtUtils]: Spent 14.61 s on a formula simplification. DAG size of input: 47 DAG size of output: 19 [2020-07-21 17:18:13,452 WARN L193 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 82 DAG size of output: 12 [2020-07-21 17:18:13,455 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:18:13,456 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:18:13,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:18:13,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:18:13,456 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 17:18:13,456 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:18:13,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-21 17:18:13,457 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-07-21 17:18:13,458 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-07-21 17:18:13,458 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-07-21 17:18:13,458 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-07-21 17:18:13,458 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (= (mod (+ main_~j~0 main_~k~0 main_~i~0 2) 4294967296) (mod (+ main_~l~0 2) 4294967296)) [2020-07-21 17:18:13,458 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (or (= (mod (+ main_~j~0 main_~k~0 main_~i~0 2) 4294967296) (mod (+ main_~l~0 2) 4294967296)) (= (mod (+ main_~j~0 main_~k~0 main_~i~0) 4294967296) (mod main_~l~0 4294967296))) [2020-07-21 17:18:13,458 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 17:18:13,458 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:18:13,458 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 17:18:13,459 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 17:18:13,459 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:18:13,459 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 17:18:13,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:18:13 BoogieIcfgContainer [2020-07-21 17:18:13,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 17:18:13,482 INFO L168 Benchmark]: Toolchain (without parser) took 267870.96 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 100.7 MB in the beginning and 195.3 MB in the end (delta: -94.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,483 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.78 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,485 INFO L168 Benchmark]: Boogie Preprocessor took 132.97 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,489 INFO L168 Benchmark]: RCFGBuilder took 306.52 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 166.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,490 INFO L168 Benchmark]: TraceAbstraction took 267163.26 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 165.6 MB in the beginning and 195.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-21 17:18:13,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.78 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.97 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.52 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 166.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267163.26 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 165.6 MB in the beginning and 195.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (j + k + i + 2) % 4294967296 == (l + 2) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 243.9s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 118.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 60 SDslu, 273 SDs, 0 SdLazy, 588 SolverSat, 58 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 98.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 123 SyntacticMatches, 14 SemanticMatches, 68 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 138.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 18 PreInvPairs, 32 NumberOfFragments, 42 HoareAnnotationTreeSize, 18 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 224 FormulaSimplificationTreeSizeReductionInter, 22.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 123.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 192 ConstructedInterpolants, 1 QuantifiedInterpolants, 30538 SizeOfPredicates, 19 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 19/124 InterpolantCoveringCapability, 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 correct! Received shutdown request...