/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:50:00,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:50:00,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:50:00,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:50:00,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:50:00,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:50:00,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:50:00,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:50:00,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:50:00,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:50:00,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:50:00,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:50:00,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:50:00,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:50:00,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:50:00,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:50:00,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:50:00,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:50:00,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:50:00,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:50:00,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:50:00,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:50:00,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:50:00,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:50:00,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:50:00,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:50:00,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:50:00,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:50:00,397 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 20:50:00,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:50:00,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:50:00,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:50:00,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:50:00,437 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:50:00,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:50:00,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:50:00,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:50:00,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:50:00,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:50:00,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:50:00,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:50:00,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:50:00,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:50:00,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:50:00,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:50:00,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:50:00,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:50:00,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:50:00,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:50:00,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:50:00,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:50:00,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:50:00,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:50:00,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:50:00,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:50:00,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:00,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:50:00,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:50:00,443 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 -> DAGSIZE 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 20:50:00,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:50:00,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:50:00,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:50:00,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:50:00,955 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:50:00,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 20:50:01,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b11ed842/89e066ff88044b9fb58f4dc2b2ef2cc7/FLAG3142aa0f7 [2020-07-21 20:50:01,859 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:50:01,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 20:50:01,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b11ed842/89e066ff88044b9fb58f4dc2b2ef2cc7/FLAG3142aa0f7 [2020-07-21 20:50:02,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b11ed842/89e066ff88044b9fb58f4dc2b2ef2cc7 [2020-07-21 20:50:02,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:50:02,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:50:02,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:50:02,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:50:02,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:50:02,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1460d30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02, skipping insertion in model container [2020-07-21 20:50:02,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:50:02,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:50:02,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:50:02,519 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:50:02,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:50:02,573 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:50:02,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02 WrapperNode [2020-07-21 20:50:02,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:50:02,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:50:02,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:50:02,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:50:02,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (1/1) ... [2020-07-21 20:50:02,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:50:02,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:50:02,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:50:02,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:50:02,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (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 20:50:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:50:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:50:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 20:50:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:50:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:50:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:50:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:50:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 20:50:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:50:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:50:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:50:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:50:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:50:03,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:50:03,256 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:50:03,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:03 BoogieIcfgContainer [2020-07-21 20:50:03,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:50:03,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:50:03,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:50:03,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:50:03,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:50:02" (1/3) ... [2020-07-21 20:50:03,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ab75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:03, skipping insertion in model container [2020-07-21 20:50:03,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:02" (2/3) ... [2020-07-21 20:50:03,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ab75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:03, skipping insertion in model container [2020-07-21 20:50:03,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:03" (3/3) ... [2020-07-21 20:50:03,317 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 20:50:03,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:50:03,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:50:03,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:50:03,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:50:03,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:50:03,429 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:50:03,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:50:03,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:50:03,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:50:03,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:50:03,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:50:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 20:50:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 20:50:03,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:03,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:50:03,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 20:50:03,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:03,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215499565] [2020-07-21 20:50:03,493 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 20:50:03,589 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:50:03,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:03,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 20:50:03,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:03,755 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 20:50:03,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:50:03,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215499565] [2020-07-21 20:50:03,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:50:03,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:50:03,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651795105] [2020-07-21 20:50:03,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:50:03,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:50:03,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:50:03,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:50:03,787 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-21 20:50:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:50:04,004 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-07-21 20:50:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:50:04,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 20:50:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:50:04,024 INFO L225 Difference]: With dead ends: 49 [2020-07-21 20:50:04,025 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 20:50:04,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:50:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 20:50:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 20:50:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 20:50:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 20:50:04,089 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 20:50:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:50:04,090 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 20:50:04,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:50:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 20:50:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 20:50:04,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:04,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:50:04,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:04,307 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:04,308 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 20:50:04,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:04,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10912346] [2020-07-21 20:50:04,309 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 20:50:04,359 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:04,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:04,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 20:50:04,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:04,740 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 20:50:04,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:50:04,812 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:50:09,446 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 20:50:09,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10912346] [2020-07-21 20:50:09,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:50:09,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 20:50:09,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724093760] [2020-07-21 20:50:09,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 20:50:09,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:50:09,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 20:50:09,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=133, Unknown=2, NotChecked=0, Total=182 [2020-07-21 20:50:09,461 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 20:50:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:50:16,112 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 20:50:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 20:50:16,113 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 20:50:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:50:16,114 INFO L225 Difference]: With dead ends: 37 [2020-07-21 20:50:16,115 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 20:50:16,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=51, Invalid=157, Unknown=2, NotChecked=0, Total=210 [2020-07-21 20:50:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 20:50:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 20:50:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 20:50:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 20:50:16,131 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 20:50:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:50:16,133 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 20:50:16,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 20:50:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 20:50:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 20:50:16,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:16,135 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 20:50:16,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:16,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:16,338 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 20:50:16,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:16,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376233187] [2020-07-21 20:50:16,342 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 20:50:16,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:16,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:16,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:50:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:16,448 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 20:50:16,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:50:18,678 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 20:50:18,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376233187] [2020-07-21 20:50:18,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:50:18,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 20:50:18,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952890845] [2020-07-21 20:50:18,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 20:50:18,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:50:18,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 20:50:18,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-07-21 20:50:18,682 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2020-07-21 20:50:20,892 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 2) 4294967296) 3) 4294967296))) is different from false [2020-07-21 20:50:27,165 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 20:50:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:50:39,647 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-07-21 20:50:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 20:50:39,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 20:50:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:50:39,651 INFO L225 Difference]: With dead ends: 48 [2020-07-21 20:50:39,651 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 20:50:39,652 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 20:50:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 20:50:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-07-21 20:50:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 20:50:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-21 20:50:39,661 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2020-07-21 20:50:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:50:39,661 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-21 20:50:39,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 20:50:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-21 20:50:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 20:50:39,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:39,663 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 20:50:39,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:39,864 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-07-21 20:50:39,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:39,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829224826] [2020-07-21 20:50:39,866 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 20:50:39,919 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:39,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:39,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 20:50:39,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:40,221 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 20:50:40,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:50:40,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:50:42,507 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1)) (.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse1 (mod c_main_~l~0 4294967296))) (or (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse1) .cse2)) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296) (mod .cse0 4294967296)) (and (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (not .cse2) (< .cse1 0)))) is different from true [2020-07-21 20:51:01,386 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-07-21 20:51:05,638 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 20:51:14,006 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 20:51:26,511 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 20:51:41,032 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 20:51:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2020-07-21 20:51:41,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829224826] [2020-07-21 20:51:41,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:51:41,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 20:51:41,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688111203] [2020-07-21 20:51:41,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 20:51:41,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:51:41,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 20:51:41,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=348, Unknown=19, NotChecked=40, Total=506 [2020-07-21 20:51:41,060 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 23 states. [2020-07-21 20:51:47,609 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1)) (.cse1 (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296)) (.cse2 (+ c_main_~l~0 2))) (and (or (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (= (mod .cse0 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0) 4294967296))) (or (= (mod .cse0 4294967296) .cse1) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)))) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (or (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (= (mod .cse2 4294967296) .cse1) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (= 0 (mod (mod (mod .cse2 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296)))) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296) (mod (+ c_main_~l~0 3) 4294967296))))) is different from false [2020-07-21 20:51:49,799 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1))) (and (or (= (mod .cse0 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)))) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (or (< (mod c_main_~l~0 4294967296) (mod c_main_~n~0 4294967296)) (= (mod c_main_~l~0 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0) 4294967296))) (or (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296) (mod (+ c_main_~l~0 2) 4294967296))))) is different from false [2020-07-21 20:51:51,914 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1))) (and (let ((.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse1 (mod c_main_~l~0 4294967296))) (or (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse1) .cse2)) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296) (mod .cse0 4294967296)) (and (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (not .cse2) (< .cse1 0)))) (or (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296) (mod (+ c_main_~l~0 2) 4294967296))))) is different from true [2020-07-21 20:52:09,595 WARN L193 SmtUtils]: Spent 11.23 s on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 20:52:35,060 WARN L193 SmtUtils]: Spent 10.61 s on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 20:52:56,302 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 47 [2020-07-21 20:53:36,366 WARN L193 SmtUtils]: Spent 16.93 s on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 20:54:31,525 WARN L193 SmtUtils]: Spent 38.22 s on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-07-21 20:55:03,291 WARN L193 SmtUtils]: Spent 10.63 s on a formula simplification that was a NOOP. DAG size: 56 [2020-07-21 20:55:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:55:30,550 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-07-21 20:55:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 20:55:30,551 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2020-07-21 20:55:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:55:30,552 INFO L225 Difference]: With dead ends: 64 [2020-07-21 20:55:30,552 INFO L226 Difference]: Without dead ends: 46 [2020-07-21 20:55:30,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 223.3s TimeCoverageRelationStatistics Valid=173, Invalid=608, Unknown=47, NotChecked=228, Total=1056 [2020-07-21 20:55:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-21 20:55:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-07-21 20:55:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 20:55:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-07-21 20:55:30,564 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 23 [2020-07-21 20:55:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:55:30,564 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-07-21 20:55:30,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 20:55:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-07-21 20:55:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 20:55:30,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:55:30,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:55:30,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:55:30,771 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:55:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:55:30,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1031065109, now seen corresponding path program 2 times [2020-07-21 20:55:30,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:55:30,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385309924] [2020-07-21 20:55:30,774 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