/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/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:14:06,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:14:06,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:14:06,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:14:06,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:14:06,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:14:06,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:14:06,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:14:06,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:14:06,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:14:06,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:14:06,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:14:06,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:14:06,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:14:06,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:14:06,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:14:06,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:14:06,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:14:06,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:14:06,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:14:06,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:14:06,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:14:06,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:14:06,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:14:06,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:14:06,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:14:06,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:14:06,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:14:06,785 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 17:14:06,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:14:06,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:14:06,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:14:06,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:14:06,833 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:14:06,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:14:06,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:14:06,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:14:06,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:14:06,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:14:06,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:14:06,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:14:06,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:14:06,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:14:06,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:14:06,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:14:06,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:06,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:14:06,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:14:06,837 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 17:14:07,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:14:07,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:14:07,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:14:07,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:14:07,182 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:14:07,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-21 17:14:07,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d01634eb/de2675160bf441da82f3daaf9c82abde/FLAGa3bbacbd2 [2020-07-21 17:14:07,837 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:14:07,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-21 17:14:07,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d01634eb/de2675160bf441da82f3daaf9c82abde/FLAGa3bbacbd2 [2020-07-21 17:14:08,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d01634eb/de2675160bf441da82f3daaf9c82abde [2020-07-21 17:14:08,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:14:08,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:14:08,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:08,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:14:08,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:14:08,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bb9df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08, skipping insertion in model container [2020-07-21 17:14:08,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:14:08,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:14:08,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:08,475 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:14:08,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:08,511 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:14:08,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08 WrapperNode [2020-07-21 17:14:08,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:08,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:14:08,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:14:08,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:14:08,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (1/1) ... [2020-07-21 17:14:08,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:14:08,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:14:08,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:14:08,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:14:08,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (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 17:14:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:14:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:14:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:14:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:14:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:14:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:14:08,986 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:14:08,986 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:14:08,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:08 BoogieIcfgContainer [2020-07-21 17:14:08,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:14:08,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:14:08,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:14:08,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:14:08,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:14:08" (1/3) ... [2020-07-21 17:14:08,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:08, skipping insertion in model container [2020-07-21 17:14:08,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:08" (2/3) ... [2020-07-21 17:14:08,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:08, skipping insertion in model container [2020-07-21 17:14:08,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:08" (3/3) ... [2020-07-21 17:14:08,998 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-07-21 17:14:09,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:14:09,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:14:09,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:14:09,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:14:09,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:14:09,058 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:14:09,059 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:14:09,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:14:09,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:14:09,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:14:09,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:14:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-21 17:14:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 17:14:09,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:09,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:09,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:09,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-07-21 17:14:09,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:09,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355230127] [2020-07-21 17:14:09,103 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 17:14:09,188 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:09,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:09,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 17:14:09,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:09,236 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 17:14:09,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:14:09,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355230127] [2020-07-21 17:14:09,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:14:09,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 17:14:09,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240081930] [2020-07-21 17:14:09,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 17:14:09,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 17:14:09,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 17:14:09,272 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-21 17:14:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:09,302 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 17:14:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 17:14:09,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 17:14:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:09,317 INFO L225 Difference]: With dead ends: 37 [2020-07-21 17:14:09,318 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 17:14:09,322 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 17:14:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 17:14:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 17:14:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 17:14:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-07-21 17:14:09,363 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-07-21 17:14:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:09,363 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-07-21 17:14:09,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 17:14:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-07-21 17:14:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 17:14:09,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:09,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:09,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:09,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-07-21 17:14:09,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:09,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768663943] [2020-07-21 17:14:09,584 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 17:14:09,626 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:09,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:09,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 17:14:09,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:09,743 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 17:14:09,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:14:09,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768663943] [2020-07-21 17:14:09,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:14:09,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 17:14:09,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205935982] [2020-07-21 17:14:09,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 17:14:09,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 17:14:09,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 17:14:09,749 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-07-21 17:14:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:09,847 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-07-21 17:14:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 17:14:09,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 17:14:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:09,850 INFO L225 Difference]: With dead ends: 34 [2020-07-21 17:14:09,850 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 17:14:09,852 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 17:14:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 17:14:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-21 17:14:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 17:14:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-07-21 17:14:09,860 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2020-07-21 17:14:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:09,860 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-07-21 17:14:09,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 17:14:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-07-21 17:14:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 17:14:09,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:09,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:10,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:10,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-07-21 17:14:10,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:10,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64579338] [2020-07-21 17:14:10,081 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 17:14:10,128 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:10,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:10,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 17:14:10,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:10,382 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 17:14:10,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:10,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:12,807 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 17:14:12,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64579338] [2020-07-21 17:14:12,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:12,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 17:14:12,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301923941] [2020-07-21 17:14:12,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 17:14:12,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:12,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 17:14:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 17:14:12,814 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 14 states. [2020-07-21 17:14:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:15,366 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-07-21 17:14:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 17:14:15,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 17:14:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:15,372 INFO L225 Difference]: With dead ends: 43 [2020-07-21 17:14:15,372 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 17:14:15,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2020-07-21 17:14:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 17:14:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-21 17:14:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 17:14:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-07-21 17:14:15,380 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2020-07-21 17:14:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:15,381 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-07-21 17:14:15,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 17:14:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-07-21 17:14:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 17:14:15,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:15,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:15,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:15,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 1 times [2020-07-21 17:14:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:15,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999496086] [2020-07-21 17:14:15,600 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 17:14:15,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:15,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:15,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 17:14:15,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:15,670 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 17:14:15,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:24,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999496086] [2020-07-21 17:14:24,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:24,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 17:14:24,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73578993] [2020-07-21 17:14:24,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 17:14:24,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 17:14:24,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-21 17:14:24,052 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-07-21 17:14:26,224 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296))) is different from false [2020-07-21 17:15:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:15:26,417 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2020-07-21 17:15:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 17:15:26,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-21 17:15:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:15:26,420 INFO L225 Difference]: With dead ends: 54 [2020-07-21 17:15:26,420 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 17:15:26,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=5, NotChecked=12, Total=72 [2020-07-21 17:15:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 17:15:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-21 17:15:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 17:15:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-07-21 17:15:26,430 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24 [2020-07-21 17:15:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:15:26,431 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-07-21 17:15:26,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 17:15:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-07-21 17:15:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 17:15:26,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:15:26,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:15:26,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:15:26,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:15:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:15:26,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-07-21 17:15:26,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:15:26,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084718270] [2020-07-21 17:15:26,635 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 17:15:26,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:15:26,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:15:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 17:15:26,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:15:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:15:27,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:15:27,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:15:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:15:42,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084718270] [2020-07-21 17:15:42,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:15:42,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2020-07-21 17:15:42,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217334279] [2020-07-21 17:15:42,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 17:15:42,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:15:42,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 17:15:42,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=365, Unknown=7, NotChecked=0, Total=462 [2020-07-21 17:15:42,172 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 22 states. [2020-07-21 17:15:48,917 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 14 [2020-07-21 17:16:07,810 WARN L193 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 53 DAG size of output: 12 [2020-07-21 17:16:47,316 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 63 DAG size of output: 14 [2020-07-21 17:17:01,321 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 70 DAG size of output: 12 [2020-07-21 17:17:56,835 WARN L193 SmtUtils]: Spent 19.46 s on a formula simplification. DAG size of input: 64 DAG size of output: 14 [2020-07-21 17:18:50,841 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 36 DAG size of output: 12 [2020-07-21 17:20:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:11,075 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2020-07-21 17:20:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 17:20:11,076 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2020-07-21 17:20:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:11,077 INFO L225 Difference]: With dead ends: 84 [2020-07-21 17:20:11,078 INFO L226 Difference]: Without dead ends: 63 [2020-07-21 17:20:11,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 152.0s TimeCoverageRelationStatistics Valid=202, Invalid=748, Unknown=42, NotChecked=0, Total=992 [2020-07-21 17:20:11,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-21 17:20:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-07-21 17:20:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 17:20:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2020-07-21 17:20:11,090 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 27 [2020-07-21 17:20:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:11,091 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2020-07-21 17:20:11,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 17:20:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2020-07-21 17:20:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 17:20:11,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:20:11,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:20:11,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:11,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:20:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:20:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1013904368, now seen corresponding path program 1 times [2020-07-21 17:20:11,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:20:11,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168178142] [2020-07-21 17:20:11,307 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 17:20:11,357 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:20:11,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:20:11,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 17:20:11,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:20:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:20:11,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:20:11,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:20:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 24 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 17:20:35,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168178142] [2020-07-21 17:20:35,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:20:35,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 20 [2020-07-21 17:20:35,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089089059] [2020-07-21 17:20:35,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 17:20:35,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:20:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 17:20:35,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=306, Unknown=6, NotChecked=0, Total=380 [2020-07-21 17:20:35,364 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand 20 states. [2020-07-21 17:20:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:56,656 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2020-07-21 17:20:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 17:20:56,657 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2020-07-21 17:20:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:56,657 INFO L225 Difference]: With dead ends: 85 [2020-07-21 17:20:56,657 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 17:20:56,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=72, Invalid=342, Unknown=6, NotChecked=0, Total=420 [2020-07-21 17:20:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 17:20:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 17:20:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 17:20:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 17:20:56,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-07-21 17:20:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:56,660 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 17:20:56,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 17:20:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 17:20:56,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 17:20:56,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:56,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 17:21:01,282 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 87 DAG size of output: 14 [2020-07-21 17:21:01,364 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:21:01,364 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:21:01,364 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:21:01,364 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:21:01,364 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 17:21:01,364 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:21:01,364 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-07-21 17:21:01,365 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-07-21 17:21:01,366 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-07-21 17:21:01,366 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-07-21 17:21:01,366 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (= (mod (+ main_~l~0 1) 4294967296) (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0 main_~v3~0 1) 4294967296)) [2020-07-21 17:21:01,366 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (= (mod (+ main_~l~0 1) 4294967296) (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0 main_~v3~0 1) 4294967296)) [2020-07-21 17:21:01,366 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-07-21 17:21:01,366 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-07-21 17:21:01,366 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 17:21:01,367 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 17:21:01,367 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:21:01,367 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 17:21:01,367 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 17:21:01,367 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:21:01,367 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 17:21:01,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:21:01 BoogieIcfgContainer [2020-07-21 17:21:01,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 17:21:01,385 INFO L168 Benchmark]: Toolchain (without parser) took 413157.72 ms. Allocated memory was 143.1 MB in the beginning and 274.7 MB in the end (delta: 131.6 MB). Free memory was 101.1 MB in the beginning and 189.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,386 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.43 ms. Allocated memory is still 143.1 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,387 INFO L168 Benchmark]: Boogie Preprocessor took 145.66 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.8 MB in the beginning and 179.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,388 INFO L168 Benchmark]: RCFGBuilder took 330.20 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 164.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,390 INFO L168 Benchmark]: TraceAbstraction took 412391.28 ms. Allocated memory was 200.8 MB in the beginning and 274.7 MB in the end (delta: 73.9 MB). Free memory was 164.2 MB in the beginning and 189.2 MB in the end (delta: -25.1 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2020-07-21 17:21:01,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.43 ms. Allocated memory is still 143.1 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.66 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.8 MB in the beginning and 179.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.20 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 164.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 412391.28 ms. Allocated memory was 200.8 MB in the beginning and 274.7 MB in the end (delta: 73.9 MB). Free memory was 164.2 MB in the beginning and 189.2 MB in the end (delta: -25.1 MB). Peak memory consumption was 48.9 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: 19]: Loop Invariant Derived loop invariant: (l + 1) % 4294967296 == (v4 + i + j + k + v3 + 1) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 407.8s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 355.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 136 SDslu, 303 SDs, 0 SdLazy, 860 SolverSat, 87 SolverUnsat, 102 SolverUnknown, 0 SolverNotchecked, 209.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 151 SyntacticMatches, 14 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 189.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 22 PreInvPairs, 40 NumberOfFragments, 35 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 344 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 50.7s InterpolantComputationTime, 126 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 218 ConstructedInterpolants, 13 QuantifiedInterpolants, 65692 SizeOfPredicates, 13 NumberOfNonLiveVariables, 324 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 31/146 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...