/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 02:08:04,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:08:04,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:08:04,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:08:04,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:08:04,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:08:04,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:08:04,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:08:04,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:08:04,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:08:04,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:08:04,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:08:04,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:08:04,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:08:04,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:08:04,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:08:04,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:08:04,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:08:04,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:08:04,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:08:04,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:08:04,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:08:04,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:08:04,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:08:04,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:08:04,259 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 02:08:04,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:08:04,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:08:04,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:08:04,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:08:04,301 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:08:04,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:08:04,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:08:04,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:08:04,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:08:04,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:08:04,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:08:04,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:08:04,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:08:04,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:08:04,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:08:04,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:08:04,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:08:04,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:08:04,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:08:04,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:08:04,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:08:04,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:08:04,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:08:04,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:08:04,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:08:04,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:08:04,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:04,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:08:04,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:08:04,311 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 -> BIGGEST_EQUIVALENCE_CLASS 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 -> 4 [2020-07-21 02:08:04,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:08:04,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:08:04,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:08:04,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:08:04,654 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:08:04,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 02:08:04,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61ca806/56f80376a0254a609e210a842ffca196/FLAGe957ab0cb [2020-07-21 02:08:05,227 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:08:05,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 02:08:05,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61ca806/56f80376a0254a609e210a842ffca196/FLAGe957ab0cb [2020-07-21 02:08:05,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f61ca806/56f80376a0254a609e210a842ffca196 [2020-07-21 02:08:05,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:08:05,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:08:05,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:08:05,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:08:05,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:08:05,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea4c8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05, skipping insertion in model container [2020-07-21 02:08:05,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:08:05,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:08:05,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:08:05,809 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:08:05,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:08:05,844 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:08:05,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05 WrapperNode [2020-07-21 02:08:05,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:08:05,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:08:05,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:08:05,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:08:05,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (1/1) ... [2020-07-21 02:08:05,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:08:05,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:08:05,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:08:05,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:08:05,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (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 02:08:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:08:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:08:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:08:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:08:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:08:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:08:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:08:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:08:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:08:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 02:08:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:08:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:08:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:08:06,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:08:06,267 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 02:08:06,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:06 BoogieIcfgContainer [2020-07-21 02:08:06,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:08:06,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:08:06,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:08:06,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:08:06,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:08:05" (1/3) ... [2020-07-21 02:08:06,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7252e2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:06, skipping insertion in model container [2020-07-21 02:08:06,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:05" (2/3) ... [2020-07-21 02:08:06,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7252e2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:06, skipping insertion in model container [2020-07-21 02:08:06,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:06" (3/3) ... [2020-07-21 02:08:06,281 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 02:08:06,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:08:06,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:08:06,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:08:06,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:08:06,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:08:06,356 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:08:06,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:08:06,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:08:06,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:08:06,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:08:06,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:08:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 02:08:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 02:08:06,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:06,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:06,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:06,441 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 02:08:06,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:06,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863850167] [2020-07-21 02:08:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 02:08:06,530 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:08:06,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:06,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 02:08:06,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:06,558 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 02:08:06,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:08:06,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863850167] [2020-07-21 02:08:06,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:08:06,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 02:08:06,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134646354] [2020-07-21 02:08:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 02:08:06,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:06,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 02:08:06,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 02:08:06,578 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-21 02:08:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:06,599 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-21 02:08:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 02:08:06,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 02:08:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:06,608 INFO L225 Difference]: With dead ends: 35 [2020-07-21 02:08:06,608 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 02:08:06,612 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 02:08:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 02:08:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 02:08:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 02:08:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 02:08:06,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 02:08:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:06,648 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 02:08:06,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 02:08:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 02:08:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 02:08:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:06,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:06,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:06,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-07-21 02:08:06,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:06,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249707713] [2020-07-21 02:08:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 02:08:06,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:06,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:06,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 02:08:06,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:06,987 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 02:08:06,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:08:06,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249707713] [2020-07-21 02:08:06,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:08:06,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 02:08:06,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107872900] [2020-07-21 02:08:06,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 02:08:06,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:06,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 02:08:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:08:06,991 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-21 02:08:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:07,067 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-21 02:08:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:08:07,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 02:08:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:07,071 INFO L225 Difference]: With dead ends: 30 [2020-07-21 02:08:07,071 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 02:08:07,073 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 02:08:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 02:08:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 02:08:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 02:08:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 02:08:07,080 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 02:08:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:07,080 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 02:08:07,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 02:08:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 02:08:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 02:08:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:07,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:08:07,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:07,297 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:07,298 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 02:08:07,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:07,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226416286] [2020-07-21 02:08:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 02:08:07,350 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:07,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:07,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 02:08:07,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:07,558 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 02:08:07,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:07,591 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:08:09,917 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 02:08:09,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226416286] [2020-07-21 02:08:09,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:08:09,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 02:08:09,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760646197] [2020-07-21 02:08:09,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 02:08:09,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 02:08:09,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 02:08:09,924 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 02:08:18,440 WARN L193 SmtUtils]: Spent 8.31 s on a formula simplification. DAG size of input: 33 DAG size of output: 10 [2020-07-21 02:08:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:20,625 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 02:08:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 02:08:20,625 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 02:08:20,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:20,627 INFO L225 Difference]: With dead ends: 37 [2020-07-21 02:08:20,627 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 02:08:20,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2020-07-21 02:08:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 02:08:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 02:08:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 02:08:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 02:08:20,640 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 02:08:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:20,644 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 02:08:20,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 02:08:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 02:08:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 02:08:20,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:20,646 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 02:08:20,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:20,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 02:08:20,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:20,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376529470] [2020-07-21 02:08:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 02:08:20,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:08:20,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:20,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 02:08:20,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:20,933 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 02:08:20,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:23,099 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 02:08:23,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376529470] [2020-07-21 02:08:23,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:08:23,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 02:08:23,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9927549] [2020-07-21 02:08:23,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 02:08:23,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 02:08:23,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-07-21 02:08:23,102 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2020-07-21 02:08:25,241 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 02:08:31,476 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) is different from false [2020-07-21 02:08:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:08:43,901 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-07-21 02:08:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 02:08:43,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 02:08:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:08:43,904 INFO L225 Difference]: With dead ends: 48 [2020-07-21 02:08:43,904 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 02:08:43,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=38, Unknown=3, NotChecked=26, Total=90 [2020-07-21 02:08:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 02:08:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-07-21 02:08:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 02:08:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-21 02:08:43,914 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2020-07-21 02:08:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:08:43,915 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-21 02:08:43,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 02:08:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-21 02:08:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 02:08:43,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:08:43,916 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 02:08:44,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:08:44,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:08:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:08:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-07-21 02:08:44,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:08:44,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668453180] [2020-07-21 02:08:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 02:08:44,164 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:08:44,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:08:44,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 02:08:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:08:44,345 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 02:08:44,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:08:44,373 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:08:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 7 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 02:08:52,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668453180] [2020-07-21 02:08:52,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:08:52,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2020-07-21 02:08:52,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249270290] [2020-07-21 02:08:52,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 02:08:52,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:08:52,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 02:08:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=165, Unknown=3, NotChecked=0, Total=210 [2020-07-21 02:08:52,998 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 15 states. [2020-07-21 02:09:01,496 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 02:09:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:05,642 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-07-21 02:09:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 02:09:05,642 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-07-21 02:09:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:05,643 INFO L225 Difference]: With dead ends: 48 [2020-07-21 02:09:05,643 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 02:09:05,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=54, Invalid=213, Unknown=5, NotChecked=0, Total=272 [2020-07-21 02:09:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 02:09:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 02:09:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 02:09:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 02:09:05,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-07-21 02:09:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:05,646 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 02:09:05,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 02:09:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 02:09:05,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 02:09:05,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:05,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 02:09:06,118 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:09:06,118 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:09:06,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:09:06,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:09:06,119 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 02:09:06,119 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:09:06,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:09:06,119 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:09:06,119 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-21 02:09:06,120 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-07-21 02:09:06,121 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-07-21 02:09:06,121 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-07-21 02:09:06,121 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-07-21 02:09:06,121 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) 4294967296) (mod main_~l~0 4294967296)) [2020-07-21 02:09:06,121 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~j~0 main_~k~0 main_~i~0) 4294967296)) [2020-07-21 02:09:06,122 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 02:09:06,122 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 02:09:06,122 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 02:09:06,122 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 02:09:06,122 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 02:09:06,122 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 02:09:06,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:09:06 BoogieIcfgContainer [2020-07-21 02:09:06,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 02:09:06,141 INFO L168 Benchmark]: Toolchain (without parser) took 60549.56 ms. Allocated memory was 145.8 MB in the beginning and 243.3 MB in the end (delta: 97.5 MB). Free memory was 103.7 MB in the beginning and 200.2 MB in the end (delta: -96.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,143 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.71 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,145 INFO L168 Benchmark]: Boogie Preprocessor took 118.83 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,146 INFO L168 Benchmark]: RCFGBuilder took 306.67 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,147 INFO L168 Benchmark]: TraceAbstraction took 59866.45 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 167.7 MB in the beginning and 200.2 MB in the end (delta: -32.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2020-07-21 02:09:06,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.71 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.83 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 182.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.67 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59866.45 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 167.7 MB in the beginning and 200.2 MB in the end (delta: -32.5 MB). Peak memory consumption was 7.8 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) % 4294967296 == l % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 59.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 44.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 30 SDslu, 177 SDs, 0 SdLazy, 287 SolverSat, 26 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 25 HoareAnnotationTreeSize, 16 FomulaSimplifications, 68 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 189 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 84 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 136 ConstructedInterpolants, 1 QuantifiedInterpolants, 14316 SizeOfPredicates, 13 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/52 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...